Quiz about Genetics

Question 1

What is a phenotype?

Accepted Answer

The expression of a trait; what you see.

Answer

refers to the genetic makeup of an individual

Answer

An organism that has the same genes for a trait (ex. TT or tt)

Answer

the passing of traits from parent to offspring

Question 2

What does heterozygous mean?

Accepted Answer

An organism that has different genes for a trait (Tt)

Answer

An organism that has the same genes for a trait (TT or tt)

Answer

When neither gene is fully dominant; offspring is a mixture of both

Answer

the different forms of a trait (hair color--> brown, blonde, red

Question 3

A heterozygous yellow pea plant's genotype would be:

Accepted Answer

Yy

Answer

YY

Answer

yy

Answer

Yg

Question 4

A corn plant heterozygous for tall sprouts is crossed with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 5

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?

Accepted Answer

50% Tt, 50% tt

Answer

100% Tt

Answer

75%Tt, 25%tt

Answer

25%TT, 50%Tt, 25%tt

Question 6

TT,tt,PP,pp,SS,ss are examples of alleles that are?

Accepted Answer

homozygous

Answer

heterozygous

Answer

different

Answer

homologous

Question 7

The genetic makeup of an organism, such as RR, Tt, PP is its _____.

Accepted Answer

genotype

Answer

phenotype

Answer

dominance

Answer

trait

Question 8

Heterozygous is when...

Accepted Answer

the alleles are different

Answer

the alleles are the same

Answer

the alleles are absent

Answer

the alleles are present

Question 9

G = green, g = yellow
The genotype for a yellow plant is...

Accepted Answer

gg

Answer

GG

Answer

Gg

Answer

all of the choices result in yellow

Question 10

Which of the following alleles is homozygous (purebred) recessive?

Accepted Answer

tt

Answer

Tt

Answer

TT

Answer

t

Question 11

Which of the following genotypes is homozygous dominant?

Accepted Answer

AA

Answer

A

Answer

Aa

Answer

aa

Question 12

Which of the following genotypes is heterozygous?

Accepted Answer

Bb

Answer

BB

Answer

bb

Answer

B

Question 13

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

Accepted Answer

RR or Rr

Answer

rr

Answer

R

Answer

RR

Question 14

This is an example of ___________?

Accepted Answer

Incomplete dominance

Answer

Codominance

Question 15

This is an example of ___________.

Accepted Answer

Codominance

Answer

Incomplete Dominance

Question 16

This is an example of ___________.

Accepted Answer

Codominance

Answer

Incomplete Dominance

Question 17

What does this Punnett square and the probabilities of the ofspring represent?

Accepted Answer

incomplete dominance

Answer

codominance

Question 18

What do half colored symbols in a pedigree represent?

Accepted Answer

The individual is a carrier (heterozygous).

Answer

The individual expresses the trait.

Answer

The individual has both recessive alleles.

Answer

The individual has both dominant alleles.

Question 19

How many individuals are heterozygous in this pedigree?

Accepted Answer

6

Answer

2

Answer

3

Answer

5

Question 20

How many females are in this pedigree?

Accepted Answer

7

Answer

3

Answer

4

Answer

6

Question 21

An allele or gene that always shows is

Accepted Answer

dominant

Answer

recessive

Answer

hidden

Answer

present

Question 22

Which is a true statements about this picture?

Accepted Answer

Brown is dominant

Answer

Brown is recessive

Answer

Blue is dominant

Answer

Blue is codominant

Question 23

Who is considered the "father of genetics"?

Accepted Answer

Gregor Mendel

Answer

Reginald Punnett

Answer

James Watson

Answer

Justin Bieber

Question 24

Each parent passes ___ allele to their offspring.

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 25

T - tall and t = short
In the punnett square below, what belongs in the missing square

Accepted Answer

tt

Answer

Tt

Answer

Bb

Answer

TT

Question 26

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

Accepted Answer

RR or Rr

Answer

rr

Answer

R

Answer

RR

Question 27

If "B" represents brown hair, and "b" represents blonde hair, what will the genotype be for an individual that is homozygous for brown hair?

Accepted Answer

BB

Answer

Bb

Answer

bb

Question 28

What type of inheritance do two alleles have if their traits blend together?

Accepted Answer

Incomplete Dominance

Answer

Codominance

Answer

Complete Dominance

Question 29

A certain trait is considered autosomal recessive. How many individuals in this pedigree have the trait?

Accepted Answer

4

Answer

3

Answer

6

Answer

10

Question 30

A pink flower and a white flower produced this offspring:

Accepted Answer

Codominance

Answer

Incomplete dominance

Answer

Complete dominance

Genetics

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science