D3.2 Inheritance (Analysis of patterns)

Question 1

Haemophilia

Answer 1

-sex linked
-recessive disorder
-clotting factor defeciency

Question 2

Only _____ can be carriers for Haemophilia.

Answer 2

females

Question 3

circles on pedigree chart are _____ while squares are _____.

Answer 3

females, males

Question 4

Recessive disorders become more common with _____________________________. More likely that each individual is __________________.

Answer 4

interbreeding between close family members, carrying the recessive allele.

Question 5

Discrete variation

Answer 5

-single gene
-distinct categories
-no environmental influence
-ex. blood type

Question 6

Continuous variation

Answer 6

-many genes (polygenic)
-no distinct categories (many phenotypes)
-environmental influence
-ex. skin color

Question 7

Mathematically determine outliers

Question 8

unlinked genes

Answer 8

genes found on separate chromosomes

Question 9

segregation

Answer 9

separation of alleles during meiosis

Question 10

independent assortment

Answer 10

segregation of alleles in a way that the inheritance of one doesn’t influence the other

Question 11

independent assortment is ___________________.

Answer 11

related to random orientation

Question 12

Dihybrid cross

Answer 12

predict outcomes of 2 unlinked autosomal genes

Question 13

How to do a dihybrid cross?

Answer 13

-list parents’ genotypes (HhRr * HhRr)
-do FOIL to find gametes (HR, Hr, hR, hr)
-put each of these on the top/sides of the four columns
-fill in (there should be 4 letters in each box)

Question 14

phenotypic ratio

Answer 14

All of the phenotypes in a dihybrid cross represented as a ratio (ex. 9:3:3:1)

Question 15

locus

Answer 15

specific location of gene on a chromosome

Question 16

linked genes

Answer 16

genes located on the same chromosome

Question 17

Linked genes are inherited together unless ______________________. Genes closer together are _____.

Answer 17

recombination occurs during prophase I. (crossing over), more likely to be inherited

Question 18

Unlinked gene notation (_____)

Answer 18

RrGg

Question 19

Recombinant

Answer 19

new combination of alleles on chromosome as a result of crossing over in prophase 1

Question 20

If my gametes are RG and rg, then my recombinants are ____________.

Answer 20

Rg and rG

Question 21

we can use chi-squared test to determine _______

Answer 21

if our observed data is different than our expected data.

Question 22

hypothesis

Answer 22

there is a significant difference between what we observed and what we expected