Quiz about Mendelian Genetics

Question 1

Recessive alleles are-

Accepted Answer

lowercase

Answer

capital

Answer

both

Answer

neither

Question 2

What do we call the result of the genotype (for example, the color of the peas)?

Accepted Answer

Phenotype

Answer

Visible traits

Answer

Physiotrait

Answer

Genotype 2

Question 3

In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?

Accepted Answer

Gg

Answer

GG

Answer

gg

Answer

green

Question 4

Dominant alleles are-

Accepted Answer

capital

Answer

lowercase

Answer

both

Answer

neither

Question 5

Genotype: Aa

Accepted Answer

heterozygous dominant

Answer

homozygous dominant

Answer

homozygous recessive

Question 6

______ refers to an observable characteristics of an individual.

Accepted Answer

trait

Answer

personality

Answer

cell

Answer

DNA

Question 7

The set of genes carried by an organism; i.e. TT, Tt, tt is called a _____.

Accepted Answer

genotype

Answer

phenotype

Answer

prototype

Answer

stereotype

Question 8

Select all that would be considered phenotypes:

Accepted Answer

Blonde

Accepted Answer

Short

Answer

Rr

Answer

rr

Question 9

What genotype is homozygous dominant?

Accepted Answer

RR

Answer

Rr

Answer

rr

Question 10

Which genotype is a homozygous recessive?

Accepted Answer

rr

Answer

RR

Answer

Rr

Question 11

D = dimples d = no dimples
What is the genotype for a homozygous recessive offspring?

Accepted Answer

dd

Answer

DD

Answer

Dd

Question 12

What is the percentage of a homozyogus dominant offspring?

Accepted Answer

0%

Answer

75%

Answer

50%

Answer

25%

Question 13

What percentage of the offspring will be heterozygous dominant?

Accepted Answer

50%

Answer

100%

Answer

75%

Answer

25%

Question 14

What percentage of the possible offspring will be hybrids?

Accepted Answer

50%

Answer

25%

Answer

75%

Answer

100%

Question 15

What allele combination should go in the missing box?

Accepted Answer

Aa

Answer

AA

Answer

aa

Answer

none of these

Question 16

If B = brown hair and b = blonde hair, what is the probability of brown hair?

Accepted Answer

75%

Answer

25%

Answer

50%

Answer

0%

Question 17

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

Accepted Answer

It is bb.

Answer

It is BB.

Answer

It is Bb

Answer

It is brown

Question 18

Which of the following genotypes is homozygous dominant?

Accepted Answer

AA

Answer

A

Answer

Aa

Answer

aa

Question 19

Which of the following is a hybrid?

Accepted Answer

Ll

Answer

LL

Answer

ll

Question 20

If "T" is the dominant allele for tall and "t" is the recessive allele for short, then what phenotype would "Tt" produce?

Accepted Answer

tall

Answer

short

Answer

medium

Answer

not enough info

Question 21

In the Punnett Square below, which genotype belongs in the missing square?

Accepted Answer

tt

Answer

Tt

Answer

Bb

Answer

TT

Question 22

The alleles "tt" is which genotype?

Accepted Answer

Homozygous Recessive

Answer

Homozygous Dominant

Answer

Heterozygous

Answer

Heterozygous dominant

Question 23

If yellow peas are dominant, then a heterozygous yellow pea plant's genotype would be:

Accepted Answer

Yy

Answer

YY

Answer

yy

Answer

Yg

Question 24

A phenotype is the ___________ of an organism.

Accepted Answer

Physical appearance

Answer

Dominance

Answer

Recessiveness

Answer

Alleles / Genes

Question 25

What are the parents' genotypes?

Accepted Answer

Heterozygous for brown eyes

Answer

Homozygous for brown eyes

Answer

Homozygous for blue eyes

Answer

Heterozygous for blue eyes

Question 26

B = brown fur b = white fur In the Punnett square, what is the probability for white fur?

Accepted Answer

50% (2/4 or 1/2)

Answer

0% (0/4)

Answer

25% (1/4)

Answer

75% (3/4)

Question 27

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

Accepted Answer

25% (1/4)

Answer

0% (0/4)

Answer

50% (2/4 or 1/2)

Answer

75% (3/4)

Question 28

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

Accepted Answer

50% (2/4 or 1/2)

Answer

0% (0/4)

Answer

25% (1/4)

Answer

75% (3/4)

Question 29

The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. In this cross, tallness (H) is dominant to shortness (h).

Based on the Punnett square, what is the phenotype of the offspring?

Accepted Answer

tall

Answer

Hh

Answer

HH

Answer

short

Question 30

A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?

Accepted Answer

50% homozygous dominant; 50% heterozygous; 100% tall

Answer

100% homozygous dominant; 100% tall

Answer

25% homozygous dominant; 75% heterozygous; 100% short

Answer

50% homozygous dominant; 50% heterozygous; 100% short

Question 31

If polydactyly (born with extra toes/fingers) is a dominant trait in cats, then which of the following genotype(s) would produce a cat with extra toes? (Select all that apply.)

Accepted Answer

Tt

Accepted Answer

TT

Answer

tt

Question 32

In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?

Accepted Answer

25%

Answer

0%

Answer

75%

Answer

100%

Question 33

What are the possible genotypes for this cross?
(Click the picture to see it without the text)

Accepted Answer

TT = 25% Tt= 50% tt=25%

Answer

all tall

Answer

TT= 75% tt = 25%

Answer

Tt = 100%

Mendelian Genetics

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science