Chapters 14 15 16

Question 1

Mendel chose pea plants for his work because

Answer 1

the pea plant has traits controlled by single genes, were easily controlled in mating, have easily observed variations

Question 2

Dihybrid cross involves organisms that are heterozygous

Answer 2

for 2 characters, a mono hybrid only 1

Question 3

When crossing homozygous dominant and homozygous recessive the

Answer 3

dominant trait shows

Question 4

In Mendel’s experiments

Answer 4

one phenotype was always dominant over the other

Question 5

Two characters appearing in a 9:3:3:1 ratio

Answer 5

obey the laws of independent assortment

Question 6

Mendel observed both the F1 and F2 generations because

Answer 6

traits form parents not shown in the F1 generation were seen in the F2 generation

Question 7

The basis of Mendel’s second law of independent assortment

Answer 7

follows the alignment of tetrads at the equator in meiosis I

Question 8

If a cross between a red and white flower yield purple offspring,

Answer 8

this is an example of incomplete dominance

Question 9

Pleiotropy is the ability for a single gene

Answer 9

to have multiple phenotypic effects

Question 10

ABO blood type is an example of

Answer 10

Multiple alleles

Question 11

Cystic Fibrosis has the ability to affect multiple organ systems of the body, this is an example of

Answer 11

pleiotropy

Question 12

Huntington’s Disease is a

Answer 12

dominant allele disease, if one parent has the disease the probably their child will have it is
50%