quiz

Question 1

It is a diagram that predicts the outcome of a genetic cross by considering all possible combinations of gametes in a cross.

Answer 1

PUNNETT SQUARE

Question 2

It is a flower with all of the floral whorls present (calyx, corolla, stamens, and pistil)

Answer 2

COMPLETE FLOWER

Question 3

It is the removal of immature male structure to prevent self-pollination or unwanted cross pollination.

Answer 3

EMASCULATION

Question 4

Refers to when the two alleles for a trait in an individual are same

Answer 4

HOMOZYGOUS

Question 5

Refers to an allele that expresses only when the dominant allele is absent

Answer 5

RECESSIVE

Question 6

Where the same trait is expressed generation after generation

Answer 6

TRUE BREEDING

Question 7

Refers to when the two alleles for a trait in an individual are different

Answer 7

HETEROZYGOUS

Question 8

Typical phenotypic ratio for a Mendelian dihybrid cross is ____________.

Answer 8

9:3:3:1

Question 9

Human blood type is an example of what type of inheritance pattern?

Answer 9

CO-DOMINANCE

Question 10

A black sheep is bred with a white sheep. All of their offspring have a phenotype of gray coats. What is the most likely pattern of inheritance for coat color in sheep?

Answer 10

INCOMPLETE

Question 11

The members of each allelic pair separate during _________.
A) meiosis
B) mitosis
C) either meiosis or mitosis
D) fertilization
E) hybridization

Question 12

Two parents are heterozygous for dominant trait A and recessive trait a. If they mate, the probability of producing an offspring who displays the dominant trait is
A) 100%
B) 75%
C) 50%
D) 25%
E) 0%

Question 13

Two plants with pink flowers are crossed, and the F1 show the following ratio: 1 red: 2 pink: 1 white. The best explanation for this phenomenon is
A) segregation
B) codominance
C) mutation
D) incomplete dominance
E) independent assortment

Question 14

When two inherited alleles are expressed at the same time, which of the following is exhibited?
A) Linkage
B) Epistasis
C) Codominance
D) Incomplete Dominance
E) Multiple Alleles

Question 15

In pea plants, the trait for tall stems is dominant over the trait for short stems. If two heterozygous tall plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents?
A) 25%
B) 50%
C) 75%
D) 100%

Question 16

In watermelon plants the allele for solid green fruit (G) is dominant over the allele for striped fruit (g). Pollen from a flower of a homozygous green watermelon plant is used to pollinate a flower from a heterozygous green watermelon plant. What percent of the offspring of this cross will bear striped watermelons?
A) 0%
B) 25%
C) 50%
D) 100%

Question 17

Crosses between white-coated cattle (CWCW) and red-coated cattle (CRCR) produce roan offspring (CRCW). This type of inheritance pattern is known as
A) multiple allele inheritance
B) crossing-over
C) sex linkage
D) codominance

Question 18

A form of dominance characterized by the manifestation of a third phenotype, usually intermediate between that of the two parents.
A) Complete dominance
B) Incomplete dominance
C) Codominance
D) No dominance

Question 19

The offspring displays the phenotypic traits of both parents simultaneously.
A) Complete dominance
B) Incomplete dominance
C) Codominance
D) No dominance

Question 20

One of the two alleles is fully expressed.
A) Complete dominance
B) Incomplete dominance
C) Codominance
D) No dominance

Question 21

List five (5) traits of peas observed by Mendel in his breeding experiment.

Question 22

In two to three sentences, explain why Mendel chose pea plant for his breeding experiment.