Principles Of Inheritance Mock Tests

16 questions available

Principles Of Inheritance Mock Test 1

Questions: 16

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Class 12 Biology

In a cross between two individuals with genotype IᴬIᵇ and Iᴬi, how many different genotypes and phenotypes are expected among the offspring respectively:

A 4 genotypes and 3 phenotypes

B 3 genotypes and 4 phenotypes

C 4 genotypes and 4 phenotypes

D 3 genotypes and 3 phenotypes

Class 12 Biology

The phenomenon where one gene affects two or more seemingly unrelated traits is called:

A Pleiotropy

B Polygenic inheritance

C Epistasis

D Linkage

Class 12 Biology

Human skin colour is a classic example of polygenic inheritance. This means that:

A Multiple genes (at least three loci in the classic model) contribute additively to the phenotype, producing a continuous range of skin tones

B A single gene with multiple alleles determines skin colour

C Skin colour is determined solely by environmental factors such as sun exposure

D The trait is controlled by genes on the X chromosome only

Class 12 Biology

A child with blood group O has a father with blood group A and a mother with blood group B. What are the most likely genotypes of the parents:

A Father: Iᴬi, Mother: Iᴮi

B Father: IᴬIᴬ, Mother: IᴮIᴮ

C Father: Iᴬi, Mother: IᴮIᴮ

D Father: IᴬIᴬ, Mother: Iᴮi

Class 12 Biology

In a cross between two heterozygous pea plants with round yellow seeds (RrYy x RrYy), the proportion of offspring with recombinant phenotypes (round green or wrinkled yellow) is:

A 6/16

B 9/16

C 3/16

D 8/16

Class 12 Biology

A man with blood group A marries a woman with blood group B. Their child has blood group O. What are the possible genotypes of the parents:

A Father: I^A i, Mother: I^B i

B Father: I^A I^A, Mother: I^B I^B

C Father: I^A i, Mother: I^B I^B

D Father: I^A I^A, Mother: I^B i

Class 12 Biology

Molecular diseases in humans include:

A Sickle cell anaemia and phenylketonuria (PKU)

B Down syndrome and Turner syndrome

C Haemophilia and colour blindness

D Cystic fibrosis and muscular dystrophy only

Class 12 Biology

Two genes located very close together on the same chromosome are most likely to show which pattern of inheritance in a dihybrid cross:

A Strict linkage with very few or no recombinant offspring

B Independent assortment producing a 9:3:3:1 ratio

C Sex-linked recessive inheritance pattern

D Incomplete dominance with intermediate phenotypes

Principles Of Inheritance Mock Tests

Principles Of Inheritance Mock Test 1

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