Genes and Inheritance

Question 1

Gamete

Answer 1

Sex cells (men - sperm, women - egg)

Question 2

Fertilization

Answer 2

When sperm and egg cell fuses

Question 3

gestation

Answer 3

Development of foetus until birth. The period of time where the fertilised egg fully develops into a foetus.

Question 4

inheritence

Answer 4

passing on of DNA

Question 5

gene

Answer 5

gene is small section of a chromosome.
The instructions that code for a certain protein,
Alleles are small variations of genes

Question 6

chromosome

Answer 6

Chromosomes are long threads of DNA. 46 in each nucleus of a cell except gametes

Question 7

genetic variation

Answer 7

Genetic variation is when random mutations are passed down from parent to child. The mutations that cause genetic variation occur in the DNA.
Genetic variation is inherited.

Question 8

desired characters

Answer 8

Variations that help organisms survive are called desired characteristics.

Question 9

Why animals have variation

Answer 9

Animals within the same species vary from one another.
This is because of their slightly different genes.
For example, not all cheetahs can run at the same speed. Some are slightly faster and some are slower than others.
This is to do with the genes that control muscles size, aerodynamic head shape and so on.