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Beschreibung
Quiz von John Loughlin, aktualisiert more than 1 year ago
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Erstellt von John Loughlin
vor mehr als 7 Jahre
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Frage 1
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Genetics is the study of:
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The nucleus
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RNA
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DNA
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Inheritance
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Inheritance is:
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The passing on of traits from one generation to the next.
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The passing on of cells from one generation to the next.
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The passing on of proteins from one generation to the next.
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The passing on of ideas from one generation to the next.
Frage 3
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A gamete is:
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A diploid cell
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A triploid cell
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A haploid sex cell
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A bacterial cell
Frage 4
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Meiosis is important in sexual reproduction because it produces:
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New cells
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Sex cells
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Diploid cells
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Zygotes
Frage 5
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In humans there are ___________ chromosomes in each sex cell.
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46
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23
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92
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22
Frage 6
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Fertilisation is:
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The fusion of two diploid cells to form a diploid zygote
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The fusion of two haploid cells to form a diploid zygote
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The fusion of a diploid cell and a haploid cell to form a diploid zygote
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The fusion of two haploid cells to form a haploid zygote
Frage 7
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An alternative form of a gene is known as:
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An allele
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A locus
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A gentoype
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A phenotype
Frage 8
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A locus is:
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The position of a chromosome in a cell
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The position of a gene on a chromosome
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The position of a protein on a chromosome
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The position of a cell in the body
Frage 9
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Which of the following terms correctly describes the situation when two alleles are identical?
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Heterozygous
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Dominance
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Recessive
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Homozygous
Frage 10
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Which of the following terms correctly describes the situation when two alleles are different?
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Homozygous
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Heterozygous
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Recessive
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Dominance
Frage 11
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Pure-breeding means the same as:
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Homozygous
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Heterozygous
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Recessive
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Dominance
Frage 12
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Dominance in genetics refers to:
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Where one allele has very little effect over another allele
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Where one allele is as effective as another allele
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Where one allele complements the effect of another allele
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Where one allele masks the effect of another allele
Frage 13
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Recessive in genetics refers to:
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When an allele's effect is only expressed in the heterozygous condition
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When an allele's effect is only expressed in the homozygous condition
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When an allele's effect is never expressed
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When an allele's effect is always expressed
Frage 14
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Genotype of an individual refers to its:
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Genetic make-up
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Physical make-up
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Physiological make-up
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Psychological make-up
Frage 15
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Phenotype of an individual refers to:
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Physical make-up
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Genetic make-up
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Psychological make-up
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Physiological make-up
Frage 16
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A man with brown eyes and the genotype, BB and a woman with blue eyes and the gentoype, bb have a child. What will the genotype and phenotype of that child be?
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BB and brown eyes
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Bb and brown eyes
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Bb and blue eyes
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bb and blue eyes
Frage 17
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A man and a woman both with brown eyes and the genotype, Bb have have a child. What is the correct ratio of brown eyes : blue eyes with regard to all the offsprings' phenotypes?
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1:1
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2:1
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3:1
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1:3
Frage 18
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Which of the following genotypes correctly describes a human male?
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X
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Y
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XY
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XX
Frage 19
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Which of the following genotypes correctly describes a human female?
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X
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Y
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XY
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XX
Frage 20
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Which of the following genotypes correctly describes a male bird?
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X
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Y
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XY
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XX
Frage 21
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Which of the following genotypes correctly describes a female bird?
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X
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Y
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XY
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XX
Frage 22
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How many different possible gametes are there from an individual with the genotype XY?
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1
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2
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3
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4
Frage 23
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How many different possible gametes are there from an individual with the genotype XX?
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1
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2
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3
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4
Frage 24
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Incomplete dominance in genetics refers to:
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alleles of an allelic pairs are equally expressed
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alleles of an allelic pairs are not equally expressed
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alleles of an allelic pairs are incompletely expressed
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alleles of an allelic pairs are not expressed at all
Frage 25
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A genetic cross between a red-flowered snapdragon plant and a white-flowered snapdragon plant demonstrated incomplete dominance. What colour were the flowers of the resulting offspring?
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White
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Red
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Pink
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Red and white
Frage 26
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A genetic cross between two pink-flowered snapdragon plants produced a red, pink and white flowered plants in the resultant offspring. Which of the following ratios is correct for the resultant phenotypes (red : pink : white)?
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1:3:1
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1:2:1
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1:1:1
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1:4:1
Frage 27
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Who is known as the father of genetics?
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Henry Dixon
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John Joly
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Gregor Mendel
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Alfred Russell-Wallace
Frage 28
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The Law of Segregation states that:
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Cells have two factors for each trait and these factors separate at fertilisation
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Cells have two factors for each trait and these factors separate at gamete formation
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Cells have one factor for each trait and this factor separates from all others at gamete formation
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Cells have one factor for each trait and this factor joins with other factors at gamete formation
Frage 29
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The Law of Independent Assortment states that:
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Either member of a pair of factors can fuse with either member of another pair at gamete formation
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Either member of a pair of factors can combine with either member of another pair at gamete formation
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Either member of a pair of factors cannot separate from either member of another pair at gamete formation
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Either member of a pair of factors will separate from each other at gamete formation
Frage 30
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A pure-breeding pea plant for purple flowers and round seeds was crossed with a pure-breeding pea plant for white flowers and wrinkled seeds. All of the offspring from this cross produced purple flowers and round seeds. The offspring were 'selfed' and the F2 progeny produced showed 4 different phenotypes in a specific ratio. Which is the correct ratio of the F2 phenotypes?
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1:1:1:1
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4:3:2:1
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9:3:3:1
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9:6:3:1
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