D3.2

Question 1

WHat is sickle cell anaemia

Answer 1

when aleles cause red blood cells to adopt sickle shape when o2 avaliablity is low.

leads to crampng pains in fingers+toes and fatigue

caused by failty beta-globin gene needed for production of haemoglobin in rbc

Question 2

for chi squared critical value significance

Answer 2

needs to be more than cirtical value

Question 3

what is a autosomal chromosme

Answer 3

Not sex )1-22)

Question 4

gene vs allele

Answer 4

A gene is a heritable factor that controls a specific characteristic, while an allele is a variant form of a gene

Question 5

discontinious vs continious

Answer 5

dis distinct catorgories-con range

dis is quantastive- con is qualative

con is polygenic, dis is determined by 1

con is impacted by enviro, dis is not

Question 6

males cant be (sex linked)

Answer 6

carriers cause always expressed

Question 7

Importance of segregation of alleleles

Answer 7

enhances genetic diversity
during meiosis
alleles separate into difffrent celles/gametes

Question 8

why do blood groups matter during a transfusion§

Answer 8

A B AB cobtain antigens
this can bring a dangerous immune repsonse
resulting in coagulation of the recipient’s blood

Question 9

disadvatage of having O blood

Answer 9

can onyl receive O blood in transusion cause A B OR AB would cause coagulation

all other blood groups contain antigens which would initiate immune repsonse

Question 10

codominant

Answer 10

both dominant and recwssive alleles are present in genotype

Question 11

segregation of alleles

Answer 11

during meiosis
individuals alleles separate into diff cells/gametes
allows diffrent combinations of allees to gve to offspring (variety)

Question 12

inheritance for x linked conditions

Answer 12

females are the only carrier
males cant carry
f cant inherit it froma. recessive father(cause it dosnt exist) all men will have it
m always inherit x linked trait
m cant be hereto carrriers and cant mask it with another dominant

Question 13

linked genes are on

Answer 13

the same chromosome and close together

Question 14

alleles can be arranged

Answer 14

through mutations

Question 15

all eukarotic cells have 2

Answer 15

alleles of every gene

Question 16

online gene bases can be

Answer 16

accessed by anyone

Question 17

test cross is a

Answer 17

cross with a homo recessive

Question 18

recombiants is

Answer 18

crossng over of bivalents and independrn assprtment of chromosomes in meiosis 1§

Question 19

what is the segregation of alleles

Answer 19

separaton of paired gene alleles during meiosis, ensures each gamete receives only 1 allele for each gene

Question 20

what happens to blood a and b when mixed with anti-A or anti- A+b

Answer 20

an agglutination reaction which will appear as dots.

o doesnt do this cause it has no antigens

Question 21

genomes of many

Answer 21

species have been sequenced