Test
Genetics Lab 1
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (20)
1write the correct letter(s) for each mutation
[blank_start]w[blank_end] white eyes
[blank_start]y[blank_end] yellow body color
[blank_start]f[blank_end] forked bristles
[blank_start]B[blank_end] barred eyes
[blank_start]dp[blank_end] dumpy wings
[blank_start]vg[blank_end] vestigial (shriveled wings)- Aw
- By
- Cf
- DB
- Edp
- Fvg
2Which mutation(s) does this fruit fly possess? Include the letter designation.
- AB
- BBar
- CDumpy
- Ddp
- EWhite eyes
- Fw
3Which mutation(s) does this fruit fly possess? Include the letter designation.
- AYellow
- By
- CVestigial
- Dvg
- EWhite eyes
- Fw
4Check all that describe the "wild type" fruit fly
- Ared eyes
- Bgrey/tan body
- Clong, smooth wings
- Dsmooth bristles
- Eforked bristles
- Fwhite eyes
- Gshriveled wings
- Hshort wings
- Iyellow body
5A fruit fly's bristles appear to diverge after a certain point so that one bristle has two ends. Which mutation(s) does this fruit fly possess? Include the letter designation.
- AForked
- Bf
- Cyw
- DYellow body-color
- EBar
- FB
6Which is male and which is female?
- Afemale
- Bmale
7To pipette 250 uL of a solution, it is best to use a
- AP-200 micropipette
- BP-1000 micropipette
- C1 mL serological pipette
- D10 mL serological pipette
8A garden pea plant that has the genotype Rr for its smoothed pea phenotype is a ___________ plant and uses __________ to produce gametes.
- Adiploid; mitosis
- Bdiploid; meiosis
- Chaploid, mitosis
- Dhaploid; meiosis
9A garden pea plant that has the genotype Rr for its smoothed pea phenotype is _____________ for the trait of pea shape, and is ____________ for the gene determining the pea-shaped trait.
- AA true line; homozygous
- BA true line; heterozygous
- CNot a true line; homozygous
- DNot a true line; heterozygous
10The law of equal segregation predicts this garden pea plant will produce two different kinds of gametes, carrying either the R allele or the r allele as a result of separation of homologous chromosomes during [blank_start]anaphase I[blank_end].
- Aanaphase I
- Banaphase II
- Cmetaphase I
- Dmetaphase II
11When a garden pea plant that has the genotype Rr for its smoothed pea phenotype has a self-cross and generates F1 offspring generation, one would predict that [blank_start]75%[blank_end] of the offspring would produce smooth pea, and [blank_start]25%[blank_end] of the offspring would produce wrinkled pea.
- A75%
- B25%
- C50%
- D100%
- E25%
- F50%
- G75%
- H100%
12Thomas Morgan was convinced Gregor Mendel's theory was correct because
- ACharles Darwin said so
- Bhe could match the white gene mutation on the X chromosome in Drosophila
- CHe found polytene chromosome banding patterns in Drosophila
- DHe recognized Frances Crick and James Wason's double helix structure of DNA
13The Drosophila hedgehog (hh) gene was discovered in the 1980s. It is an important gene that encodes a secreted protein to regulate limb formation. Which of the statements below is incorrect?
- AThe fly hh mutants would likely show phenotype on fly wings
- BThe fly hh mutants would likely show the phenotype on fly eyes
- CThe hh gene is unique to Drosophila, no other animals have hh gene or its homolog
14The white gene is located on the X chromosome. There are [blank_start]1[blank_end] copy(ies) of white gene in a cell of a male fly and [blank_start]2[blank_end] copy(ies) in a cell of a female fly.
- A1
- B2
- C2
- D1
15In describing the timing of Drosophila development, researchers use AEL to mean "After egg-laying" , for example, 40 h AEL means 40 hours afer egg laying. At 25 degrees C, a fruit fly of 75h AEL is in:
- AEmbryonic stage
- BLarval stage
- CPupal stage
16Peter identified that a gray body colored mutant fly is due to X-linked mutation, and the gray body color is a recessive phenotype. Which option below illustrates the proper way to write the genotype of such gray color mutant male fly when the symbol "G" illustrates the wild type allele and "g" the mutant allele?
- AGg
- Bgg
- CX^G X^g
- DX^G Y
- EX^g Y
17When a female fly with recessive X-linked gray body color mates with a male fly with wild type body color, which of the following would Peter observe?
- AAll offspring have wild type body color
- BAll offspring have gray body color
- CAll female offspring have wild type body color, and all male offspring have gray body color
- DAll male offspring have wild type body color, and all female offspring have gray body color.
18Normally a male of Aa genotype would produce sperms with genotype(s) of A or a. Occasionally non-disjunction happens during meiosis I of spermatogenesis and consequently results in sperm with genotype(s) of...
- AAA
- Baa
- CAa
19The mating of an Aa male and an aa female produced an offspring with the genotype AAa. Therefore, the resulting offspring has 3 copies of gene 1 (trisomy for Chromosome 1). At what stage during meiosis did the non-disjunction event occur and in which parent? Check all of the options that apply
- APaternal non-disjunction in meiosis I
- BMaternal non-disjunction in meiosis I
- CPaternal non-disjunction in meiosis II
- DMaternal non-disjunction in meiosis II
20The mating of an Aa male and an aa female produced an offspring with the genotype aaa. Therefore, the resulting offspring has 3 copies of gene 1 (trisomy for Chromosome 1). At what stage during meiosis did the non-disjunction event occur and in which parent? Check all of the answers that apply.
- APaternal non-disjunction in Meiosis I
- BMaternal non-disjunction in Meiosis I
- CPaternal non-disjunction in Meiosis II
- DMaternal non-disjunction in Meiosis II
Información
- Descripción
- Test sobre Genetics Lab 1, creado por Jo O'Bar el 17/09/2019.
- Autor
- Jo O'Bar
- Idioma
- English
- Visitas
- 93
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- Valoración
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