Biology - Conor

Question 1

What structure is DNA arranged in

Answer 1

A double helix structure

Question 2

Where is the DNA found

Answer 2

In the nucleus of cells

Question 3

What is the male sex cell

Answer 3

Sperm cell

Question 4

What is the female sex cell

Answer 4

Egg cell

Question 5

What is a gene

Answer 5

A gene is a section of chromosomes that decide a specific characterisctic of an organism

Question 6

What is a dominant allele

Answer 6

A allele that is shown even if there is only one of them

Question 7

What is a recessive allele

Answer 7

A allele that only appears if there both alleles are the same

Question 8

What are homozygeous alleles

Answer 8

Alleles that are the same

Question 9

What are heterozygeous alleles

Answer 9

Different alleles

Question 10

What sex cromosomes do males have

Answer 10

XY

Question 11

What sex chromosomes do Females have

Answer 11

XX

Question 12

What is the name for when a sperm cell and egg cell meet

Answer 12

Fertilisation

Question 13

What does DNA stand for

Answer 13

DeoxyRibonecleic acid

Question 14

How many chromosomes does a sperm cell have

Answer 14

23

Question 15

How many chromosomes does a egg cell have

Answer 15

23

Question 16

How many chromosomes does a skin cell have

Answer 16

46

Question 17

How many forms of each gene do we enherit

Answer 17

2

Question 18

What is the function of the cell membrane

Answer 18

It controls what enteres and leaves the cell

Question 19

What is the function of the nucleus

Answer 19

Holds the DNA

Question 20

What does GMO stand for

Answer 20

Geneticaly Modified Organism

Question 21

What can be used to predict the genotype of offspring

Answer 21

Punnet square

Question 22

What is a genotype

Answer 22

The genetic makeup of an organism

Question 23

What are phenotypes

Answer 23

Orservable trates or characteristics of an organism

Question 24

What is the role of chromosomes

Answer 24

That contain the genes

Question 25

What is a dependant variable

Answer 25

The thing you measure

Question 26

What is a dependant variable

Answer 26

The thing you change to see what happens

Question 27

What is a control variable

Answer 27

Something you keep the same to keep a fair test

Question 28

What is selective breeding

Answer 28

When two parents with desirable characteristics are breed together to get a ofspring with the same disirable characteristics

Question 29

Give two advantages of selective breeding

Answer 29

Increased yield/food from crops and animals Resistance against diseases House pets can be made softer

Question 30

Give two disadvantages of selective breeding

Answer 30

Selective breeding can lead to inbreeding Smaller gene pool makes it more likely that one disease could affect them all