Skip to content

Course home

Sign up

3.3 Inheritance

EasyMediumHard
123456789101112131415161718192021222324252627282930313233
Question 23
H

A recessive allele a a\,a causes an inherited condition. An unaffected woman has an affected father. Her partner has genotype AaAaAa.

What is the probability that their child will be an unaffected carrier?

[1]
A

0%0\%0%

B

25%25\%25%

C

75%75\%75%

D

50%50\%50%

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.

Question bank