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Biology 10 Chapter 15 - Inheritance - 5
1.
What is the condition called in which normal body pigments are absent?
a) Vasopressin
b) Goitre
c) Calcitonin
d) Albinism
2.
If we represent the two alleles of a gene pair as “A” and “a”, then how many combinations of these two alleles would be possible?
a) One
b) Four
c) Three
d) Two
3.
If we represent the two alleles of a gene pair as “A” and “a”, then how many genotypes of these two alleles would be possible?
a) One
b) Three
c) Four
d) Two
4.
If we represent the two alleles of a gene pair as “A” and “a”, then which of the following will be the genotypes of these two alleles?
a) Genotype AA
b) Genotype Aa
c) Genotype aa
d) All of these genotypes
5.
If we represent the two alleles of a gene pair as “A” and “a”, then which of the following will be the combinations of these two alleles?
a) All of these genotypes
b) Genotype Aa
c) Genotype aa
d) Genotype AA
6.
Into how many types, genotypes can be grouped?
a) Four
b) Three
c) Two
d) Five
7.
What is the specific combination of two identical alleles of a gene pair called?
a) Homozygous phenotype
b) Homozygous genotype
c) Heterozygous genotype
d) Heterozygous phenotype
8.
What is the specific combination “AA” called?
a) Homozygous phenotype
b) Homozygous genotype
c) Heterozygous genotype
d) Heterozygous phenotype
9.
What is the specific combination “aa” called?
a) Heterozygous phenotype
b) Homozygous genotype
c) Heterozygous genotype
d) Homozygous phenotype
10.
What is an organism’s expressed physical trait, such as seed colour or pod shape, called?
a) Physical type
b) Karyotype
c) Genotype
d) Phenotype
11.
Which of the following is the example of homozygous genotype?
a) (d) Genotype Aa
b) (c) Genotype aa
c) (b) Genotype AA
d) (a) Both b and c
12.
What is the specific combination called in which the gene pair contains two different alleles?
a) Homozygous phenotype
b) Homozygous genotype
c) Heterozygous genotype
d) Heterozygous phenotype
13.
Which of the following is the example of homozygous genotype?
a) Genotype aa
b) Genotype Aa
c) Genotype AA
d) None of these
14.
What is the specific combination “Aa” called?
a) Homozygous genotype
b) Heterozygous genotype
c) Heterozygous phenotype
d) Homozygous phenotype
15.
In heterozygous condition, what is the allele called that masks or prevent the expression of the other allele?
a) Dominant allele
b) Genotypic allele
c) Phenotypic allele
d) Recessive allele
16.
What is the allele called that is not expressed in heterozygous condition?
a) Phenotypic allele
b) Recessive allele
c) Genotypic allele
d) Dominant allele
17.
How dominant alleles are represented?
a) By small case letters
b) None of these
c) By capital letters
d) By digits
18.
How recessive alleles are represented?
a) By capital letters
b) By small case letters
c) None of these
d) By digits
19.
What is Albinism?
a) A dominant trait
b) May be recessive or dominant trait
c) None of these
d) A recessive trait
20.
In humans, which allele produces normal body pigments?
a) Allele B
b) Allele a
c) Allele b
d) Allele A
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