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3.3 Inheritance

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Question 10
F

A dominant allele D D\,D causes an inherited condition. A father with the condition and a mother without it have one child without the condition.

Which are the parental genotypes?

[1]
A

father DDDDDD; mother dddddd

B

father DdDdDd; mother dddddd

C

father DdDdDd; mother DdDdDd

D

father DDDDDD; mother DdDdDd

Markscheme

3.3 Inheritance Questions

  1. GCSE
  2. /Biology
  3. /3.3 Inheritance

43 exam-style questions on Edexcel GCSE Biology 3.3 Inheritance, covering 3.3.1 Gregor Mendel and the basis of genetics, 3.3.2 Alleles and inherited characteristics, 3.3.3 Monohybrid inheritance, 3.3.4 Determination of sex at fertilisation, 3.3.5 Outcomes from monohybrid crosses, 3.3.6 Inheritance of ABO blood groups, 3.3.7 Inheritance of sex-linked disorders, and 3.3.8 Multiple genes and phenotypic features. Each one has a worked solution and a mark scheme showing where the marks go.

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