Quiz
Chapter 16: Genetics Revision Questions
Perguntas do quiz (30)
1Genetics is the study of:
- AThe nucleus
- BRNA
- CDNA
- DInheritance
2Inheritance is:
- AThe passing on of traits from one generation to the next.
- BThe passing on of cells from one generation to the next.
- CThe passing on of proteins from one generation to the next.
- DThe passing on of ideas from one generation to the next.
3A gamete is:
- AA diploid cell
- BA triploid cell
- CA haploid sex cell
- DA bacterial cell
4Meiosis is important in sexual reproduction because it produces:
- ANew cells
- BSex cells
- CDiploid cells
- DZygotes
5In humans there are ___________ chromosomes in each sex cell.
- A46
- B23
- C92
- D22
6Fertilisation is:
- AThe fusion of two diploid cells to form a diploid zygote
- BThe fusion of two haploid cells to form a diploid zygote
- CThe fusion of a diploid cell and a haploid cell to form a diploid zygote
- DThe fusion of two haploid cells to form a haploid zygote
7An alternative form of a gene is known as:
- AAn allele
- BA locus
- CA gentoype
- DA phenotype
8A locus is:
- AThe position of a chromosome in a cell
- BThe position of a gene on a chromosome
- CThe position of a protein on a chromosome
- DThe position of a cell in the body
9Which of the following terms correctly describes the situation when two alleles are identical?
- AHeterozygous
- BDominance
- CRecessive
- DHomozygous
10Which of the following terms correctly describes the situation when two alleles are different?
- AHomozygous
- BHeterozygous
- CRecessive
- DDominance
11Pure-breeding means the same as:
- AHomozygous
- BHeterozygous
- CRecessive
- DDominance
12Dominance in genetics refers to:
- AWhere one allele has very little effect over another allele
- BWhere one allele is as effective as another allele
- CWhere one allele complements the effect of another allele
- DWhere one allele masks the effect of another allele
13Recessive in genetics refers to:
- AWhen an allele's effect is only expressed in the heterozygous condition
- BWhen an allele's effect is only expressed in the homozygous condition
- CWhen an allele's effect is never expressed
- DWhen an allele's effect is always expressed
14Genotype of an individual refers to its:
- AGenetic make-up
- BPhysical make-up
- CPhysiological make-up
- DPsychological make-up
15Phenotype of an individual refers to:
- APhysical make-up
- BGenetic make-up
- CPsychological make-up
- DPhysiological make-up
16A 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?
- ABB and brown eyes
- BBb and brown eyes
- CBb and blue eyes
- Dbb and blue eyes
17A 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?
- A1:1
- B2:1
- C3:1
- D1:3
18Which of the following genotypes correctly describes a human male?
- AX
- BY
- CXY
- DXX
19Which of the following genotypes correctly describes a human female?
- AX
- BY
- CXY
- DXX
20Which of the following genotypes correctly describes a male bird?
- AX
- BY
- CXY
- DXX
21Which of the following genotypes correctly describes a female bird?
- AX
- BY
- CXY
- DXX
22How many different possible gametes are there from an individual with the genotype XY?
- A1
- B2
- C3
- D4
23How many different possible gametes are there from an individual with the genotype XX?
- A1
- B2
- C3
- D4
24Incomplete dominance in genetics refers to:
- Aalleles of an allelic pairs are equally expressed
- Balleles of an allelic pairs are not equally expressed
- Calleles of an allelic pairs are incompletely expressed
- Dalleles of an allelic pairs are not expressed at all
25A 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?
- AWhite
- BRed
- CPink
- DRed and white
26A 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)?
- A1:3:1
- B1:2:1
- C1:1:1
- D1:4:1
27Who is known as the father of genetics?
- AHenry Dixon
- BJohn Joly
- CGregor Mendel
- DAlfred Russell-Wallace
28The Law of Segregation states that:
- ACells have two factors for each trait and these factors separate at fertilisation
- BCells have two factors for each trait and these factors separate at gamete formation
- CCells have one factor for each trait and this factor separates from all others at gamete formation
- DCells have one factor for each trait and this factor joins with other factors at gamete formation
29The Law of Independent Assortment states that:
- AEither member of a pair of factors can fuse with either member of another pair at gamete formation
- BEither member of a pair of factors can combine with either member of another pair at gamete formation
- CEither member of a pair of factors cannot separate from either member of another pair at gamete formation
- DEither member of a pair of factors will separate from each other at gamete formation
30A 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?
- A1:1:1:1
- B4:3:2:1
- C9:3:3:1
- D9:6:3:1
Informações
- Descrição
- Revision questions on genetics and inheritance for Leaving Cert Biology
- Autor
- John Loughlin
- Idioma
- English
- Visualizações
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