Theme 4a Part 1

Question 1

What is blending inheritance

Answer 1

Offspring have traits the are intermediate (similar) to their parents

Question 2

What happens to variation of phenotype overtime if blending occurs?

Answer 2

Variation will be reduced over time

Question 3

What did mendel do

Answer 3

Tested the hypothesis of blending vs particulate inheritance by using true breeding varieties of peas

Question 4

What is P1

Answer 4

First parental generation

Question 5

What is F1

Answer 5

First filial generation

Offspring of P1

Question 6

What were mendels hypothesis’s

Answer 6

Adult plants carry two copies of genes that give inheritance of a character

If individuals pair of genes consist of diff alleles, one allele is dom over the other

The pair of allele that control a character, separate as gametes. Half of these gametes are haploid ie carry one allele and other half carry the other allele.

Diploid organism get one allele from each parent

Question 7

When do you use the product rule for probabilities?

Answer 7

When your looking for probability of two independent events happening at same time.

The individual probabilities are mutiplied

Ex. Flipping head twice in a row

1/2x1/2

1/4 probability

Question 8

When do we use sum rule for probabilities?

Answer 8

When looking for probability that 1 or the other of two diff events will happen

The individual probabilities are added

Ex. probability of a heads and a tails in two tosses.

1. Head then tails :1/4
2. Tail then heads: 1/4

Total probability: 1/4+1/4=1/2

Question 9

How did Mendel test if statistical patterns are the same throughout each generation

Answer 9

Tested true breeding strains
Focus on a single trait at a time
Count the progeny