B3 Key Points

Question 1

What are the three components of the structure of dna

Answer 1

Sugar(deoxyribose), phosphate, one of the four bases

Question 2

What is it called when the three components of dna are together

Answer 2

Nucleotide

Question 3

What is the shape of dna

Answer 3

Double helix

Question 4

Describe the structure of dna

Answer 4

On the outside you have the sugar phosphate backbones on either side and then in the middle is the base pairs. Everything is joined with hydrogen bonds

Question 5

What is the chance of getting a genetic disorder if both parents are homozygous with one good allele and one bad

Answer 5

75%

Question 6

What percent chance is there of having a boy/girl

Answer 6

50/50

Question 7

What is a genotype

Answer 7

All the genes from one organism( roughly 26,000 in each organism)

Question 8

What are the main two reasons for genetic testing

Answer 8

Do i carry a faulty allele?
⬇️
1)WILL I PASS ON ANY GENETIC DISORDERS TO MY CHILDREN?

2)AM I PRONE TO ANY LIFESTYLE ILLNESSES?

Question 9

What are the four main blood types?

Answer 9

A
AB
B
O

Question 10

What are antigens?

Answer 10

Proteins on the surface of red blood cells

Question 11

What are antibodies

Answer 11

Y shaped proteins that form part of the immune system