Adaptation and inheritance

Question 1

Who worked out how DNA was arranged and won the noble prize?

Answer 1

Watson and Crick

Question 2

What are the features of DNA?

Answer 2

Two strands, form a double helix( twisted together in spiral), held together by bonds between base pairs (connects strands of DNA)

Question 3

Who discovered DNA the photograph 51?

Answer 3

Rosalind Franklin

Question 4

What is the smallest, Gene, chromosome or genome?

Answer 4

A gene.

Question 5

Where are chromosomes found?

Answer 5

In the Nucleus.

Question 6

How many chromosomes do normal body cells have?

Answer 6

23 pairs (46)

Question 7

How many chromosomes do sperm and egg have?

Answer 7

23

Question 8

What is a gene?

Answer 8

A section of DNA that gives us our characteristics.

Question 9

What is a genome?

Answer 9

One copy of all our DNA.

Question 10

How many genes do we have?

Answer 10

Around 20,000

Question 11

Boys and girls belong to the same……

Answer 11

Species

Question 12

What is one of the processes involved in selective breeding?

Answer 12

choosing individuals with desirable features. They can’t reproduce without interference.

Question 13

Which of these is a common example of selective breeding?

Cows that produce lots of meat

Tomato plants that produce fewer tomatoes

Crops that catch diseases

Answer 13

A common example of selective breeding is cows that produce lots of meat. Farmers want lots of tomatoes not a few.

Question 14

How have humans developed so many varieties of dog?

Answer 14

by selective breeding

Question 15

What can all organisms of the same species do?

Answer 15

Reproduce to have fertile offspring

Question 16

What is special about a liger?

Answer 16

A liger cannot reproduce.

Question 17

What does infertile mean?

Answer 17

Cannot reproduce

Question 18

Where is most variation found?

Answer 18

Most variation is found between species. Lions and tigers can reproduce to have ligers but this isn’t relevant here.

Question 19

Which organisms all belong to the same species?

Answer 19

Dogs all belong to the same species. There are many species of shark.

Question 20

What fertile?

Answer 20

Capable of producing offspring

Question 21

What is selective breeding?

Answer 21

An artificial process in which organisms with desired characteristics are chosen as parents for the next generation

Question 22

What is variation?

Answer 22

Difference between individuals; distance from the norm.

Question 23

What is continuous variation?

Answer 23

Vary over large range of values

Question 24

What is discontinuous variation?

Answer 24

Only have certain values

Question 25

What is inherited variation?

Answer 25

Differences between individuals of a species due to their genetic information

Question 26

What is environmental variation?

Answer 26

Differences between individuals of a species due to factors in their surroundings.

Question 27

What are chromosomes?

Answer 27

Long,coiled up lengths of DNA

Question 28

What is DNA?

Answer 28

List of chemical instructions on how to build an organism

Question 29

What is a gene bank?

Answer 29

A store of genes of different species

Question 30

What is a gene

Answer 30

A short section of DNA

Question 31

What are chromosomes?

Answer 31

Long,coiled up lengths of DNA

Question 32

What is DNA?

Answer 32

List of chemical instructions on how to build an organism

Question 33

What is a gene bank?

Answer 33

A store of genes of different species

Question 34

What is a gene

Answer 34

A short section of DNA