Variation, genes and alleles

Question 1

What is variation

Answer 1

Variation is the presence of differences between living things of the same species.

Question 2

5 examples of human variation

Answer 2

Accent, eye colour, hair colour, height, mass, intelligence, spots

Question 3

Inherited variation

Answer 3

Something that you inherited (or got) from your parents.

Question 4

Environmental

Answer 4

Something you can change about yourself, this isn’t inherited e.g tatoos

Question 5

What is a gene

Answer 5

A gene is something that is inherited or passed down from one relative to another and It’s a section of DNA. Genes form part of a chromosome in the DNA.

Question 6

How many genes are there in the human body

Answer 6

There are around 26,000 in the human body

Question 7

What is an allele

Answer 7

A different version of the same gene. They will only be expressed when both are of the same type e.g hh

Question 8

What is a dominant gene

Answer 8

Dominant genes overrule Alleles. They are always expressed, even if you just have one. Represented by a capital letter.