Genetic Inheritance

The interaction of specific alleles determines the physical characteristics that are expressed in every living organism.

If both parents have brown eyes, can a child have blue eyes?

What is Genetic Inheritance?

"Genetic inheritance is the process by which characteristics are passed from parents to offspring through the transmission of alleles."

Question 1

What is an allele?

Question 2

What is meant by a dominant allele?

Question 3

Which genotype is heterozygous?

Allele: A different version of a gene. Genotype: The combination of alleles you have.

Phenotype: The physical characteristic resulting from your genotype.

Exam Tip

A dominant allele (e.g. B) is always expressed, while a recessive allele (e.g. b) is only expressed if two copies are present.

Master genetic inheritance and more with our exam-focused practice app.

No sign-up required to start