Variation

Question 1

Organisms in the same species can look different. What is this called?

Answer 1

Differences = variation within a species

Either Genetic variation or Environmental variation

Question 2

Different [ ] cause genetic variation

Answer 2

Genes

Question 3

Explain why plants/animals have characteristics that are in some ways similar to their parents

Answer 3

An organisms’ characteristics are determined by the genes inherited fro their parents. These genes are passed on in sex cells (gametes), which the offspring develop from. Most animals and a lot of plants get some genes from the mother and some from the father.

Question 4

What causes genetic variation?

Answer 4

This combining of genes from 2 parents causes genetic variation - only genetically identical people are identical twins

Question 5

Some characteristics are determined only by [ ].
Example in plant: [ ]
Example in animal: [ ]

Answer 5

genes
Violet flower colour
Eye colour, blood group and inherited disorders

Question 6

What is environmental variation?

Answer 6

The environment that an organism lives and grows in causes differences between members of the same species.

Question 7

Most characteristics are caused by [ ] AND [ ]

Answer 7

Genetic variation

Environmental variation

Question 8

Name some characteristics that are due to both Genetic variation and Environmental variation

Answer 8

Body weight, height, skin colour etc.