3.4.3 and 3.4.4

Question 1

ABO blood type

Answer 1

classification system uses presence or absence of certain antigen on red blood cells to categorise blood into type A, B, AB, O

Question 2

type O

Answer 2

the universal donor, has no antigens against which recipient immune system can react

Question 3

type AB

Answer 3

the universal recipient, the blood has no antibodies which react to AB antigens

Question 4

Antigens

Answer 4

any substance cause immune system produce antibodies against it

Question 5

Antibodies

Answer 5

(immunoglobulin) protective protein produced by immune system in response to the presence of antigen

antibodies are specific to antigens!!

Question 6

segregation

Answer 6

alleles of each gene separate into different gametes when the individual produces gametes

Question 7

monohybrid cross

Answer 7

both parents are heterozygous for a single trait

Question 8

recessive

Answer 8

interaction of an allele in a diploid state

recessive alleles only affect the trait (phenotype) when homozygous

Question 9

rare

Answer 9

frequency of an allele, describes how many people in a population carry the allele