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3.3 Inheritance

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Question 26
F

A human egg cell is fertilised by a sperm cell carrying a Y chromosome.

Which combination describes the zygote?

[1]
A

XX chromosomes; male offspring

B

XY chromosomes; female offspring

C

XX chromosomes; female offspring

D

XY chromosomes; male offspring

Markscheme

3.3 Inheritance Questions

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

71 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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