inherited change

Question 1

why do we use ratios to present our results?

Answer 1

they allow for valid comparisons between data as sample sizes can vary

Question 2

dihybrid for 2 homozygous

Answer 2

1:1:1:1 ratio

Question 3

dihybrid for 2 heterozygous

Answer 3

9:3:3:1

Question 4

law of independent assortment

Answer 4

each pair of alleles may randomly combine with another pair of alleles

Question 5

monohybrid for 2 heterozygotes ratio

Answer 5

3:1

Question 6

monohybrid for 2 homozygous ratio

monohybrid for homozygous recessive and heterozygous

Answer 6

1

1:1

Question 7

monohybrid for codominance ratio

Answer 7

1:2:1

Question 8

recessive epistatis ratio (the usual one)

dominant epistatis ratio

Answer 8

9: 3:4
12: 3:1

Question 9

conditions for Hardy-Weinburg

Answer 9

no mutations
no migration
large population
random fertilisation takes place
no selection occurs

Question 10

why does it not fit the ratio

Answer 10

fertilisation is a random process

larger the sample the more likely it will stick

Question 11

hardy weinburg equations

Answer 11

START WITH RECESSIVE
p² + 2pq + q² = 1 p + q = 1

p is the dominant allele q is the recessive allele

Question 12

why is chi squared suitable

Answer 12

shows if there is a significant difference

uses catergorical data which genetics often is

Question 13

important notes about sex linkage

Answer 13

y chromosome is shorter so a normal bivalent doesnt form during meiosis

Question 14

what is special about cells in mitosis?

Answer 14

the chromosomes are condensed and visible