Dihybrid Inheritance

Report 1 / 5

Which of the following is correct about dihybrid cross?

(A)		A cross which involves one pair of allele that determines one character

(B)		A cross which involves one pair of allele that determines two characters

(C)		A cross which involves two pairs of alleles that determines one character

(D)		A cross which involves two pairs of alleles that determines two characters

Difficulty Level: Hard

Report 2 / 5

Which of the following is correct about Mendel's second law?

I.		It is about the Law of Independent Assortment

II.		The alleles segregate independently

III.		Leads to genetic variation

IV.		Give rise to different allele combinations

Difficulty Level: Medium

Report 3 / 5

What are the types of gametes that can be produced by a heterozygous pea plant (RrYy) for colour of flower and seed shape?

Difficulty Level: Medium

Report 4 / 5

Which of the following is the phenotype of offspring if gamete that carries allele BR is fertilised by gamete that carries allele br?

B: dominant for inflated pod, b: recessive for wrinkled pod, R: dominant for round seed, r: recessive for wrinkled seed.

(A)		Inflated pod and wrinkled seed

(B)		Inflated pod and round seed

(C)		Wrinkled pod and wrinkled seed

(D)		Wrinkled pod and round seed

Difficulty Level: Hard

Report 5 / 5

The following table shows a Punnett square consisting of gametes that are involved in a dihybrid cross and the offspring produced.

The letters a to the p represent the offspring from the cross.

Which of the following offspring have the same genotype as the parental genotypes?

Difficulty Level: Hard