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5.1 Inheritance

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Question 9

In pea plants, the allele for tall stems ( $T\text{T}$ ) is dominant to the allele for short stems ( $t\text{t}$ ).

A plant with the genotype $TT\text{TT}$ is crossed with a plant with the genotype $tt\text{tt}$ .

What percentage of the offspring will have short stems?

[1]

$25%25\%$

$50%50\%$

$0%0\%$

$75%75\%$

Markscheme

5.1 Inheritance Questions

GCSE
Biology
5.1 Inheritance

186 exam-style questions on OCR GCSE Biology 5.1 Inheritance, covering 5.1.1 The genome, 5.1.2 Environment and phenotype, 5.1.3 Variants and mutations, 5.1.4 How genetic variants influence phenotype, 5.1.5 Asexual and sexual reproduction, 5.1.6 Haploid and diploid, 5.1.7 Meiotic cell division, 5.1.8 Single gene inheritance, 5.1.9 Predicting single gene crosses, 5.1.10 Sex determination, 5.1.11 Multiple gene inheritance, and 5.1.12 Development of our understanding of genetics. Each one has a worked solution and a mark scheme showing where the marks go.

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