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Inheritance

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Question 7

Cats can inherit a coat pattern called a pointed coat (where the body is light and the face, ears, paws, and tail are dark).

The dominant allele C C\,C produces a fully colored coat, while the recessive allele c c\,c produces a pointed coat.

a.

The table below shows the results of six different breeding crosses of cats with various genotypes:

CrossParent 1Parent 2Offspring
ACCCCCCCcCcCcCC,CC,Cc,CcCC, CC, Cc, CcCC,CC,Cc,Cc
Bcccccccccccccc,cc,cc,cccc, cc, cc, cccc,cc,cc,cc
CCcCcCcCcCcCcCC,Cc,Cc,ccCC, Cc, Cc, ccCC,Cc,Cc,cc
DCCCCCCCCCCCCCC,CC,CC,CCCC, CC, CC, CCCC,CC,CC,CC
ECcCcCcccccccCc,Cc,cc,ccCc, Cc, cc, ccCc,Cc,cc,cc
FCCCCCCccccccCc,Cc,Cc,CcCc, Cc, Cc, CcCc,Cc,Cc,Cc

All the offspring from Cross D have a fully colored coat. Give the letter of each of the other crosses where all the offspring have a fully colored coat.

[1]
b.

Give the phenotype of both parents used in Cross B.

[1]
c.

Which cross has a 50% probability of producing offspring with a pointed coat?

[1]
d.

Give the genotype of each of the offspring produced in Cross F.

[1]
e.

The crosses between the cats are examples of sexual reproduction.

Name the gamete produced by males in sexual reproduction.

[1]
f.

Name the gamete produced by females in sexual reproduction.

[1]
g.

Give the scientific term used to describe the fusion of these gametes.

[1]
h.

In which organ of a female parent do the offspring develop?

[1]

Inheritance Questions

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