B4 Inheritance

Question 1

gene

Answer 1

A gene is a small section of DNA on a chromosome, that codes for a particular sequence of amino acids , to make a specific protein .

Question 2

allele

Answer 2

Alleles are different versions of the same gene. For example, the gene for eye colour has an allele for blue eye colour and an allele for brown eye colour.

Question 3

heterozygous

Answer 3

two different alleles of a gene

Question 4

phenotype

Answer 4

physical expression of a genotype

Question 5

chromosome

Answer 5

thin strands of DNA