Question 1
FGregor Mendel carried out breeding experiments with pea plants.
The Figure shows one of his experiments.
Figure
a.[2]
Explain why all the plants in the first generation had purple flowers.
b.[2]
Calculate the ratio of purple-flowered plants to white-flowered plants in the second generation.
Give your answer in the form x:1 x:1\,x:1 to one decimal place.
c.[1]
Mendel concluded that characteristics are controlled by 'inherited factors' that are passed from parents to offspring.
State the modern name for Mendel's inherited factors.
d.[3]
Mendel's work was not accepted by other scientists for many years.
Explain why.
3.3 Inheritance Questions
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.