11706162
Descripción
Test por Karime Chavolla, actualizado hace más de 1 año
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Creado por Karime Chavolla
hace más de 6 años
|
|
Pregunta 1
Pregunta
When an egg and sperm combine, they form a [blank_start]zygote[blank_end].
Respuesta
-
zygote
Pregunta 2
Pregunta
[blank_start]Mitosis[blank_end] is the type of cell division used to repair damaged skin.
Respuesta
-
Mitosis
Pregunta 3
Pregunta
A [blank_start]chromosome[blank_end] is a single strand of DNA and it's associated proteins.
Respuesta
-
chromosome
Pregunta 4
Pregunta
Eight [blank_start]histones[blank_end] come together come together with a strand of DNA to make a nucleosome.
Respuesta
-
histones
Pregunta 5
Pregunta
DNA must be in it's [blank_start]unpacked[blank_end] state in order to be used for replication.
Respuesta
-
unpacked
Pregunta 6
Pregunta
[blank_start]Chromatin[blank_end] is the collection of DNA and proteins combined in the nucleus.
Respuesta
-
Chromatin
Pregunta 7
Pregunta
DNA replication is considered to be [blank_start]semi-conservative[blank_end].
Respuesta
-
semi-conservative
Pregunta 8
Pregunta
The cell cycle is a sequence of events during which a cell prepares to divide [blank_start]into daughter cells[blank_end].
Respuesta
-
into daughter cells
-
into sister chromatids
-
into gamets
-
into homologous chromosomes
Pregunta 9
Pregunta
The S phase of mitosis is the event that
Respuesta
-
sister chromatids join to centromere
-
cytoplasm divides
-
cell gathers materials for DNA replication
-
DNA is replicated
Pregunta 10
Pregunta
At the end of the G2 phase [blank_start]centrosomes[blank_end] form outside the nucleus along with pairs of [blank_start]centrioles[blank_end].
Respuesta
-
centrosomes
-
centrioles
Pregunta 11
Pregunta
During interphase, chromatin is [blank_start]still uncondensed[blank_end].
Respuesta
-
still uncondensed
-
forming homologous chromosomes
-
condensed
-
not contained in nucleus anymore
Pregunta 12
Pregunta
Interphase contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
23
-
46
Pregunta 13
Pregunta
Prophase contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
23
-
96
-
92
-
46
-
23
Pregunta 14
Pregunta
Metaphase contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
23
-
96
-
46
-
23
-
92
Pregunta 15
Pregunta
Anaphase contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
92
-
46
-
23
-
92
-
46
-
23
Pregunta 16
Pregunta
Telephase contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 17
Pregunta
During prophase, chromatin
Respuesta
-
Condenses into homologous chromosomes
-
Condenses into sister chromosomes
-
Condenses into sister chromatids
-
Condenses into DNA strands
Pregunta 18
Pregunta
Check off all the events that occur during prophase.
Respuesta
-
Nuclear envelope breaks apart
-
Chromatin condenses
-
Motor proteins "walk" along microtubules
-
Centrioles push apart to elongate the cell
-
Centrosomes move apart and start forming spindle fibers
-
Sister chromatids float in cytoplasm; attached to microfilaments
-
Chromosomes line up at central plate
Pregunta 19
Pregunta
What is the name of the phase where sister chromatids line up at the central plate (equator of the cell)?
Respuesta
-
Metaphase
-
Metaphase I
-
Metaphase II
Pregunta 20
Respuesta
-
S phase
-
G1 phase
-
G2 phase
-
cytokinesis
-
Mitosis
-
interphase
-
cytokinesis
-
mitosis
-
G1 phase
-
G2 phase
-
S phase
-
Interphase
-
S phase
-
G2 phase
-
G1 phase
-
Mitosis
-
Cytokinesis
-
Interphase
-
Mitotic (M) phase
-
Mitotic (M) phase
-
Mitotic (M) phase
-
S phase
-
G1 phase
-
G2 phase
-
Cytokinesis
-
Mitosis
-
Interphase
-
Mitotic (M) phase
-
S phase
-
G1 phase
-
G2 phase
-
Cytokinesis
-
Mitosis
-
Interphase
-
Mitotic (M) phase
-
S phase
-
G1 phase
-
G2 phase
-
Cytokinesis
-
Mitosis
-
Mitotic (M) phase
-
Interphase
-
S pahse
-
G1 phase
-
G2 phase
-
Cytokinesis
-
Mitosis
-
Interphase
-
Mitotic (M) phase
Pregunta 21
Pregunta
Mitosis is a form of [blank_start]asexual[blank_end] reproduction.
Respuesta
-
asexual
Pregunta 22
Pregunta
Meiosis is a form of [blank_start]sexual[blank_end] reproduction.
Respuesta
-
sexual
Pregunta 23
Pregunta
Cytokinesis is the last phase of the cell cycle.
Respuesta
- True
- False
Pregunta 24
Pregunta
Interphase is the first phase of the cell cycle.
Respuesta
- True
- False
Pregunta 25
Pregunta
What happens when a cell spends too little time in interphase?
Respuesta
-
Causes cancer
-
Is treated with radiation
-
Divides really slowly
-
Has no effect on organism
Pregunta 26
Pregunta
Meiosis II is nearly identical to mitosis, except for
Respuesta
-
meiosis has twice the number of chromosomes as mitosis
-
mitosis has half the number of chromosomes as meiosis
-
meiosis has half the number of chromosomes as mitosis
-
mitosis has twice the number of chromosomes as meiosis
Pregunta 27
Pregunta
During interphase before meiosis; cells are [blank_start]diploid[blank_end] in number with [blank_start]92[blank_end] DNA strands.
After meiosis I; cells are [blank_start]haploid[blank_end] with [blank_start]46[blank_end] DNA strands.
After meiosis II; cells are [blank_start]haploid[blank_end] with [blank_start]23[blank_end] DNA strands.
Respuesta
-
diploid
-
92
-
haploid
-
46
-
(n)
-
23
Pregunta 28
Pregunta
Prophase I contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 29
Pregunta
Metaphase I contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 30
Pregunta
Anaphase I; contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 31
Pregunta
Telophase I contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
23
-
92
-
92
-
46
-
23
Pregunta 32
Pregunta
Prophase II; contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
23
-
92
-
92
-
46
-
23
Pregunta 33
Pregunta
Metaphase II; contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 34
Pregunta
Anaphase II; contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 35
Pregunta
Telophase II; contains; [blank_start]46[blank_end] chromosomes and [blank_start]92[blank_end] DNA strands.
Respuesta
-
46
-
92
-
23
-
92
-
46
-
23
Pregunta 36
Pregunta
Gamete cells are [blank_start]haploid[blank_end] cells with [blank_start]23[blank_end] chromosomes.
Somatic cells are [blank_start]diploid[blank_end] cells with [blank_start]46[blank_end] chromosomes.
Respuesta
-
haploid
-
23
-
diploid
-
46
Pregunta 37
Pregunta
When do homologous chromosomes exchange genetic information?
Respuesta
-
Prophase
-
Prohase I
-
Prohase II
Pregunta 38
Pregunta
What is the name of the phase where homologous chromosomes line up at the central plate (equator of the cell)?
Respuesta
-
Metaphase
-
Metaphase I
-
Metaphase II
Pregunta 39
Pregunta
Maternal and Paternal chromosomes line up randomly are positioned [blank_start]randomly[blank_end] on either side of the equatorial plate.
Respuesta
-
randomly
Pregunta 40
Pregunta
At what point are homologous chromosomes considered tetrads?
Respuesta
-
When they are exchanging genetic information
-
When they are duplicating
-
When they are separating
-
When they are attached via spindle fibers
Pregunta 41
Pregunta
What key events occur during anaphase I
Respuesta
-
Homologous chromosomes separate to opposite poles of the cell
-
Sister chromatids separate to opposite poles of the cell
-
Daughter chromosomes separate to opposite poles of the cell
-
Spindle fibers elongate the cell
-
Spindle fibers attach to each centrioles pulling on chromosomes
-
Spindle fibers attach to each centromere pulling on chromosomes
Pregunta 42
Pregunta
Interphase occurs between meiosis I and meiosis II
Respuesta
- True
- False
Pregunta 43
Pregunta
What methods are used to treat cancer?
Respuesta
-
Mastasis
-
Chemotherapy
-
Slashing
-
Surgery
-
Poison
-
Intravenous fluid
-
Radiation
Pregunta 44
Pregunta
A group of interbreeding organisms of the same species.
Respuesta
-
Population
-
Gene pool
-
Allele frequency
-
Evolution
Pregunta 45
Pregunta
All of the different genes and alleles in a population.
Respuesta
-
Gene pool
-
Evolution
-
Allele Frequency
-
Population
Pregunta 46
Pregunta
The number of copies of a specific allele relative to all the alleles for the same gene in a population.
Respuesta
-
Allele frequency
-
Gene pool
-
Population
-
Evolution
Pregunta 47
Pregunta
Evolution occurs at the population level
Respuesta
- True
- False
Pregunta 48
Pregunta
Changes in genetic characteristics of a population over time - potentially creating a new species
Respuesta
-
Descent with modification
-
Adaptations
-
Evolution
-
Mutation
Pregunta 49
Pregunta
The reproductive success "fitness" of specific alleles causes [blank_start]evolution[blank_end].
Respuesta
-
evolution
Pregunta 50
Pregunta
[blank_start]Adaptation[blank_end]; features of an organism with a selective advantage.
Respuesta
-
Adaptation
-
Evolution
-
Natural selection
-
Mutation
Pregunta 51
Pregunta
Cytokinesis is the division of the [blank_start]cytoplasm[blank_end] and the [blank_start]organelles[blank_end].
Respuesta
-
cytoplasm
-
organelles
Pregunta 52
Pregunta
In a pair of [blank_start]chromosomes[blank_end], there are two [blank_start]chromatids[blank_end] united in the center by a centromere.
[blank_start]Sister chromatid[blank_end] is only used during cell division when the structures are in an X-shape (when there are two copies connected by a centromere.
When a centromere joins two [blank_start]non-identical[blank_end] copies of a chromosome (one from each parent); they are called [blank_start]homologous chromosomes[blank_end].
Respuesta
-
chromosomes
-
sister chromatids
-
chromatids
-
homologous chromosomes
-
non-identical
-
chromatids
-
chromosomes
-
sister chromatids
-
homologous chromosomes
-
non-identical
-
Sister chromatid
-
chromosomes
-
chromatids
-
non-identical
-
homologous chromosomes
-
non-identical
-
chromosomes
-
chromatids
-
sister chromatid
-
homologous chromosomes
-
homologous chromosomes
-
chromosomes
-
chromatid
-
sister chromatid
-
non-identical
Pregunta 53
Pregunta
If nondisjunction happened in a species with 10 chromosomes; how many chromosomes would any abnormal gametes have?
Respuesta
-
6, 4
-
9, 1
-
7, 3
-
12, 8
Pregunta 54
Pregunta
Label the following diagram; mix of both meiosis and mitosis.
Image:
1 (binary/octet-stream)
Respuesta
-
Interphase
-
Anaphase I
-
Anaphase or Anaphase II
-
Metaphase I
-
Metaphse or Metaphase II
Pregunta 55
Pregunta
Label the following diagram; mix of both mitosis and meiosis.
Image:
2 (binary/octet-stream)
Respuesta
-
Cytokinesis/Telophase I
-
Cytokinesis/Telophase II
-
Prophase or prophase II
-
Prophase I
Pregunta 56
Respuesta
-
Sister chromatids
-
Sister chromatids.
-
Alleles
-
Centromere
-
Chromosome
-
Chromosome.
-
Homologous chromosomes
Pregunta 57
Respuesta
-
Homologous chromosome
-
sister chromatid
-
Abnormal gametes
-
Normal gametes
Pregunta 58
Pregunta
A gene is a combination of alleles on each chromosome in a homologous pair
Respuesta
- True
- False
Pregunta 59
Pregunta
An allele is different forms of a specific gene.
Respuesta
- True
- False
Pregunta 60
Pregunta
A phenotype is the expressed form of a gene.
Respuesta
- True
- False
Pregunta 61
Pregunta
The term self-fertilization refers to:
Respuesta
-
Sperm and eggs came from different plants
-
Sperm and eggs came from the same plant
-
Is called a homozygote
-
Is called a heterozygote
Pregunta 62
Pregunta
The term cross-fertilization refers to:
Respuesta
-
Sperm and eggs came from the same plant
-
Sperm and eggs came from different plants
-
Is a homozygote
-
Is a heterozygote
Pregunta 63
Pregunta
[blank_start]Monohybrid cross[blank_end]: Mating between two organisms that only differ in one characteristic.
[blank_start]Dihybrid cross[blank_end]: Mating between two organisms that differ in more than one characteristic.
[blank_start]Test cross[blank_end]: An individual of unknown genotype is mated with a homozygous recessive individual.
Respuesta
-
Monohybrid cross
-
Dihybrid cross
-
Test cross
Pregunta 64
Pregunta
[blank_start]Codominance[blank_end]; a heterozygote individual expresses two different alleles and is neither dominant nor recessive.
[blank_start]Incomplete dominance[blank_end]; a heterogote expresses an intermediate phenotype between dominant and recessive.
Respuesta
-
Codominance
-
Incomplete dominance
Pregunta 65
Pregunta
[blank_start]Multiple alles[blank_end]; a trait that is controlled by more than two different alleles.
[blank_start]Pleiotropic genes[blank_end]; have effects on multiple seemingly unrelated traits.
[blank_start]Polygenic traits[blank_end]; controlled by two or more sets of alleles.
[blank_start]Multifactorial trais[blank_end]; controlled by two or more sets of alleles as well as environmental factors.
Respuesta
-
Multiple alleles
-
Pleiotropic genes
-
Polygenetic traits
-
Multifactorial traits
-
Pleiotropic genes
-
Multiple alleles
-
Polygenetic traits
-
Multifactorial traits
-
Polygenic traits
-
Multiple alleles
-
Pleiotropic traits
-
Multifactorial traits
-
Multifactorial traits
-
Multiple alleles
-
Pleiotropic genes
-
Polygenic traits
Pregunta 66
Respuesta
-
Natural selection
-
Mutation
-
Genetic drift
-
Non-random mating
-
Migration
Pregunta 67
Pregunta
[blank_start]Mutation[blank_end]; produces new alleles which may provide a selective advantage.
[blank_start]Natural selection[blank_end]; environmental factors provide differences in reproductive success.
[blank_start]Artificial selection[blank_end]; selective breeding for individuals who only have specific desirable features.
[blank_start]Sexual selection[blank_end]; selective breeding of individuals of one sex for certain characteristics in the other sex.
Respuesta
-
Mutation
-
Natural selection
-
Artificial selection
-
Sexual selection
-
Natural selection
-
Mutation
-
Artificial selection
-
Sexual selection
-
Artificial selection
-
Mutation
-
Natural selection
-
Sexual selection
-
Sexual selection
-
Mutation
-
Natural selection
-
Artificial selection
Pregunta 68
Pregunta
Cytokinesis I; contains [blank_start]23[blank_end] chromosomes (in each cell) and [blank_start]46[blank_end] DNA strands.
Respuesta
-
23
-
46
-
92
-
46
-
23
-
92
Pregunta 69
Pregunta
Cytokinesis II; contains [blank_start]23[blank_end] chromosomes (in each cell) and [blank_start]23[blank_end] DNA strands.
Respuesta
-
23
-
46
-
92
-
23
-
46
-
92
Pregunta 70
Respuesta
-
Directional selection
-
Disruptive selection
-
Stabilizing selection
-
One
-
Extreme
-
Intermediate
Pregunta 71
Pregunta
[blank_start]Founder effect[blank_end]; some members migrate to a new location while the original population remains.
[blank_start]Bottleneck effect[blank_end]; some members survive while original population is drastically reduced.
Respuesta
-
Founder effect
-
Bottleneck effect
Pregunta 72
Pregunta
[blank_start]Mutation[blank_end]; change in the nucleotide sequence.
[blank_start]Frameshift[blank_end] mutation; changes the reading frame.
[blank_start]Point[blank_end] mutation; changes one codon and therefore one amino acid.
Respuesta
-
Mutation
-
Point
-
Frameshift
Pregunta 73
Pregunta
In pea plants, spherical seeds (S) are dominant to dented seeds (s). In a genetic cross of two plants that are both heterozygous for the seed shape trait, what percentage of the offspring should have spherical seeds.
Respuesta
-
100%
-
25%
-
50%
-
75%
Pregunta 74
Pregunta
A phenotypic ratio of 3:1 in the offspring of a mating of two heterozygous organisms for spherical pea shape is expected because:
Respuesta
-
the alleles segregate during meiosis
-
each allele contains two mutations
-
the alleles are incompletely dominant
-
only recessive traits are scored
Pregunta 75
Pregunta
A genetic cross between two F1-hybrid pea plants for spherical seeds; results in what percentage of seeds expressing wrinkled (recessive) seed shape?
Respuesta
-
100%
-
75%
-
50%
-
25%
Pregunta 76
Pregunta
When true-breeding tall stem pea plants are crossed with true breeding short stem pea plants. all of the [blank_start]F1-generation[blank_end] plants, and 75% of the [blank_start]F2-generation[blank_end] plants have tall stems.
Respuesta
-
F1-generation
-
F2-generation
-
G1-generation
-
G2-generation
-
F2-generation
-
F1-generation
-
G1-generation
-
G2-generation
Pregunta 77
Pregunta
To identify the genotype of yellow-seeded pea plants as either homozygous dominant (YY) or heterozygous (Yy), you could do a test cross with plants of what genotype?
Respuesta
-
yy
-
YY
-
Yy
-
Test-cross
Pregunta 78
Pregunta
A test cross is used to determine if the genotype of a plant with the dominant phenotype is homozygous or heterozygous. If the unknown is homozygous, all of the offspring of the test cross have the __________ phenotype. If the unknown is heterozygous, half of the offspring will have the __________ phenotype.
Respuesta
-
dominant, recessive
-
dominant, incompletely dominant
-
recessive, dominant
-
codominant, recessive
Pregunta 79
Pregunta
In Mendel's experiments, if the gene for tall (T) plants was incompletely dominant over the gene for short (t) plants, what would be the result of crossing two Tt plants?
Respuesta
-
25% would be tall; 50% would be intermediate; 25% would be short
-
All the offspring would be intermediate
-
50% would be tall; 25% would be intermediate; 25% would be short
-
25% would be tall; 25% would be intermediate; 50% would be short
Pregunta 80
Pregunta
A woman with type A blood and a man with type B blood could potentially have offspring with which of the following blood types?
Respuesta
-
Type A
-
Type B
-
Type AB
-
Type O
-
All options are possible
Pregunta 81
Pregunta
What are the possible blood types of the offspring of a cross between individuals that are type AB and type O?
Respuesta
-
AB or O
-
A, B, or O
-
A or B
-
A, B, or AB
Pregunta 82
Pregunta
A genetic cross of inbred snapdragons with red flowers with inbred snapdragons with white flowers resulted in F1-hybrid offspring that all had pink flowers. When the F1 plants were self-pollinated, the resulting F2-generation plants had a phenotypic ratio of 1 red: 2 pink: 1 white. The most likely explanation is:
Respuesta
-
This is an example of multifactorial traits
-
This is an example of polygenetic inheritance
-
This is an example of incomplete dominance
-
This is an example of codominance
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