Exam 2 Ch. 10

Question 1

Who was gregor mendel

Answer 1

An Austrian monk and mathematician who founded the basis of genetics in the 1860 with pea plants

Question 2

Why did mendel use pea plants

Answer 2

The gestation period was short
They could self pollinate, or be bred by hand
They are easy to cultivate

Question 3

What did Medel do and how

Answer 3

He bred pea plants.
Chose true breeding varieties and cross bred them while keeping extensive records of his findings. He came up with 2 laws of genetics

Question 4

What are mendels laws

Answer 4

1: Law of segregation
2: Law of independent assortment

Question 5

What does Law 1 mean

Answer 5

Each individual has 2 factors for each trait (One factor from each parent)

Question 6

What does law 2 mean

Answer 6

Each pair of factors assorts independently of the other pairs
All possible combinations of factors can occur in the gametes

Question 7

Homozygous

Answer 7

2 Identical alleles

Question 8

Heterozygous

Answer 8

2 different alleles

Question 9

Dominant trait

Answer 9

Allele that masks the expression of the recessive allele

Question 10

Recessive Trait

Answer 10

Will only be a shown phenotype if both alleles are recessive

Question 11

What is an allele and where are they found

Answer 11

Alternative forms of a gene.

They are found on the locus of homologus chromosomes

Question 12

What is incomplete dominance

Answer 12

The dominant allele doesnt completely mask the recessive allele and both are shown in the phenotype

EX: Red rose(Dominant) bred to White Rose (Recessive) produced a pink rose.