Y8 Bio T2-Varition + DNA

Question 1

what does continues variation mean?

Answer 1

A characteristic that changes gradually overtime

Question 2

What does discontinuous variation mean?

Answer 2

A characteristic with a limited number of possible values

Question 3

What is inherited variation?

Answer 3

A type of variation that comes from genetics

Question 4

What is environmental variation?

Answer 4

Comes from where you grew up and in what conditions


Question 5

What is evolution?

Answer 5

The theory that all kinds of living things that exist today develop from earlier organisms

Question 6

What are fossils?

Answer 6

preserved remains impressions or traces of animals, plants and other organisms that lived millions of years ago

Question 7

What does DNA stand for?

Answer 7

Deoxyribose nucleic acid

Question 8

Where is the DNA contained?

Answer 8

In the nucleus of cells

Question 9

What are chromosomes made up of?

Answer 9

Large molecules

Question 10

How many chromosomes do human cells contain?

Answer 10

46

Question 11

What is a small section of a DNA called?

Answer 11

Gene

Question 12

Four causes of extinction

Answer 12

Changing environment, new predator new competition, new disease

Question 13

What is genetic engineering?

Answer 13

Changing the DNA of living things to change its characteristics

Question 14

Does the dominant or recessive always win?

Answer 14

Dominant

Question 15

What is selective breeding?

Answer 15

A process used to produce different breeds of animals of varieties of plants that have useful characteristics. they also eliminate the species that is inherited disease or inherited defects.