Part F: Lecture 15

Question 1

Genetics is the study of ____

Answer 1

genes

Question 2

Genetics involves which organisms?

Answer 2

humans
non-model organisms
model organisms

Question 3

Molecular genetics (def.)

Answer 3

DNA removed from cell and we can do experiments on it

Question 4

Molecular genetics involves which organisms?

Answer 4

humans
non-model organisms
model organisms

Question 5

Population genetics is the study of ___

Answer 5

genes within population (lives outdoors not in lab)

Question 6

Population genetics involves which organisms?

Answer 6

humans
non-model organisms

Question 7

Classical genetics (def.)

Answer 7

examining the offspring of living organisms (in vivo)

Question 8

Classical genetics involves which organisms?

Answer 8

model organisms

Question 9

Genetic crosses for establishing dominance

Answer 9

cross two pure-breeding strains
F1 has phenotype of dominant allele (if not –> allele interaction)

Question 10

Genetic crosses: Test cross

Answer 10

cross the cell/organism with the dominant phenotype to a recessive tester for when you don’t know the genotype of organism with dominant phenotype

Question 11

Test cross when dominant phenotype (A/A) and offspring is ____

Answer 11

A/a

Question 12

Test cross when dominant phenotype (A/a) and offspring is ____

Answer 12

A/a
a/a

Question 13

Reciprocal cross F1 results when gene is on autosome

Answer 13

F1 results are the same

Question 14

Reciprocal cross F1 results when gene is on sex chromosome

Answer 14

F1 results are not the same

Question 15

Dihybrid crosses involve ___

Answer 15

two genes

Question 16

Dihybrid self crosses are also called ___

Answer 16

intercross

Question 17

Dihybrid self cross: F2 results

Answer 17

9:3:3:1 phenotypic ratio (if not -> gene interaction)

Question 18

Dihybrid self crosses involve ____

Answer 18

2 double heterozygotes

Question 19

Dihybrid test cross involve ____

Answer 19

double heterozygote
double homozygote

Question 20

Dihybrid test cross: F2 results

Answer 20

1:1:1:1 phenotypic ratio (if not –> gene on the same chromosome)

Question 21

Probability rules: Multiplication rule

Answer 21

the probability that two events both occur = prob (event 1) x prob (event 2)

Question 22

Probability rules: Addition rule

Answer 22

the probability that either of two events occur = prob (event 1) + prob (event 2)

Question 23

Probability rules: Subtraction rule

Answer 23

the probability that either something will happen or it wont
prob (event happens) + prob (event doesn’t occur) =1

Question 24

Gambler’s fallacy (def.)

Answer 24

past events influence future probabilities (ex. if 4 hasn’t come up recently it is more likely to now )

Question 25

Gambler’s fallacy example

Answer 25

actual= 1/4
gambler’s fallacy < 1/4
(this past event doesn’t affect future event)