In mice, the allele for brown fur is dominant to the allele for white fur. The diagram shows the inheritance of fur colour in a family of mice. Which two individuals are heterozygous for fur colour?

1 and 4

2 and 8

6 and 7

7 and 10

Biology

IGCSE&ALevel

CAIE

Exam No：0610_s24_qp_23 Year：2024 Question No：30

Answer:

Knowledge points:

16.2.1 Define sexual reproduction as a process involving the fusion of the nuclei of two gametes (sex cells) to form a zygote and the production of offspring that are genetically different from each other

16.2.2 Define fertilisation as the fusion of gamete nuclei

16.2.3 Discuss the advantages and disadvantages of asexual reproduction: – to a population of a species in the wild – to crop production

16.2.4 State that the nuclei of gametes are haploid and that the nucleus of a zygote is diploid

16.2.5 Discuss the advantages and disadvantages of sexual reproduction: – to a population of a species in the wild – to crop production

In mice, the allele for brown fur is dominant to the allele for white fur. The diagram shows the inheritance of fur colour in a family of mice. Which two individuals are heterozygous for fur colour?

Answer:

Knowledge points:

Solution:

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