Genetics is the study of:
The nucleus
RNA
DNA
Inheritance
Inheritance is:
The passing on of traits from one generation to the next.
The passing on of cells from one generation to the next.
The passing on of proteins from one generation to the next.
The passing on of ideas from one generation to the next.
A gamete is:
A diploid cell
A triploid cell
A haploid sex cell
A bacterial cell
Meiosis is important in sexual reproduction because it produces:
New cells
Sex cells
Diploid cells
Zygotes
In humans there are ___________ chromosomes in each sex cell.
46
23
92
22
Fertilisation is:
The fusion of two diploid cells to form a diploid zygote
The fusion of two haploid cells to form a diploid zygote
The fusion of a diploid cell and a haploid cell to form a diploid zygote
The fusion of two haploid cells to form a haploid zygote
An alternative form of a gene is known as:
An allele
A locus
A gentoype
A phenotype
A locus is:
The position of a chromosome in a cell
The position of a gene on a chromosome
The position of a protein on a chromosome
The position of a cell in the body
Which of the following terms correctly describes the situation when two alleles are identical?
Heterozygous
Dominance
Recessive
Homozygous
Which of the following terms correctly describes the situation when two alleles are different?
Pure-breeding means the same as:
Dominance in genetics refers to:
Where one allele has very little effect over another allele
Where one allele is as effective as another allele
Where one allele complements the effect of another allele
Where one allele masks the effect of another allele
Recessive in genetics refers to:
When an allele's effect is only expressed in the heterozygous condition
When an allele's effect is only expressed in the homozygous condition
When an allele's effect is never expressed
When an allele's effect is always expressed
Genotype of an individual refers to its:
Genetic make-up
Physical make-up
Physiological make-up
Psychological make-up
Phenotype of an individual refers to:
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?
BB and brown eyes
Bb and brown eyes
Bb and blue eyes
bb and blue eyes
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?
1:1
2:1
3:1
1:3
Which of the following genotypes correctly describes a human male?
X
Y
XY
XX
Which of the following genotypes correctly describes a human female?
Which of the following genotypes correctly describes a male bird?
Which of the following genotypes correctly describes a female bird?
How many different possible gametes are there from an individual with the genotype XY?
1
2
3
4
How many different possible gametes are there from an individual with the genotype XX?
Incomplete dominance in genetics refers to:
alleles of an allelic pairs are equally expressed
alleles of an allelic pairs are not equally expressed
alleles of an allelic pairs are incompletely expressed
alleles of an allelic pairs are not expressed at all
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?
White
Red
Pink
Red and white
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)?
1:3:1
1:2:1
1:1:1
1:4:1
Who is known as the father of genetics?
Henry Dixon
John Joly
Gregor Mendel
Alfred Russell-Wallace
The Law of Segregation states that:
Cells have two factors for each trait and these factors separate at fertilisation
Cells have two factors for each trait and these factors separate at gamete formation
Cells have one factor for each trait and this factor separates from all others at gamete formation
Cells have one factor for each trait and this factor joins with other factors at gamete formation
The Law of Independent Assortment states that:
Either member of a pair of factors can fuse with either member of another pair at gamete formation
Either member of a pair of factors can combine with either member of another pair at gamete formation
Either member of a pair of factors cannot separate from either member of another pair at gamete formation
Either member of a pair of factors will separate from each other at gamete formation
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?
1:1:1:1
4:3:2:1
9:3:3:1
9:6:3:1
