Quiz about Heredity Quiz Study Guide

Question 1

What are segments (parts) of DNA on a chromosome that codes for a specific trait called?

Accepted Answer

genes

Answer

chromosomes

Answer

alleles

Answer

nucleus

Question 2

A form of a gene that is always expressed as the trait when it is present is called?

Accepted Answer

dominant

Answer

recessive

Answer

allele

Answer

genotype

Question 3

The genetic makeup of an organism (such as Aa) is called?

Accepted Answer

genotype

Answer

DNA

Answer

phenotype

Answer

allele

Question 4

A gene composed of two different alleles is called?

Accepted Answer

heterozygous

Answer

homozygous

Answer

genotype

Answer

phenotype

Question 5

A gene composed of two identical alleles is called?

Accepted Answer

homozygous

Answer

heterozygous

Answer

phenotype

Answer

genotype

Question 6

The physical traits produced by the genotype; the expression of genes is called?

Accepted Answer

phenotype

Answer

genotype

Answer

mutation

Answer

Punnett square

Question 7

A mathematical model that predicts the probability of possible genotypes and phenotypes is called?

Accepted Answer

Punnett square

Answer

population

Answer

graph

Answer

chart

Question 8

A form of a gene that is expressed only when a dominant allele is not present is called?

Accepted Answer

recessive

Answer

variation

Answer

evolution

Answer

dominant

Question 9

If an organism is homozygous dominant for a trait, what could its genotype look like?

Accepted Answer

RR

Answer

Rr

Answer

rr

Answer

All of the above

Question 10

If an organism is homozygous recessive for a trait, what could its genotype look like?

Accepted Answer

tt

Answer

TT

Answer

Tr

Answer

All of the above

Question 11

If an organism is heterozygous for a trait, what could its genotype look like?

Accepted Answer

Hh

Answer

HH

Answer

hh

Answer

All of the above

Question 12

A flowering shrub has two possible flower color traits: red and white. The dominant allele (R) codes for red flowers, the recessive allele (r) codes for white flowers.

A heterozygous red-flowered shrub is cross-pollinated by a white-flowered shrub.

What is the probability that an offspring of the parent generation will have white flowers?

Accepted Answer

50%

Answer

0%

Answer

25%

Answer

100%

Question 13

If both parents are heterozygous for a trait, what is the probability of a recessive offspring?

Accepted Answer

25%

Answer

50%

Answer

75%

Answer

100%

Question 14

The passing of traits from parent to offspring is called?

Accepted Answer

heredity

Answer

biodiversity

Answer

adaptation

Answer

mutation

Question 15

A characteristic that an organism can pass on to its offspring through its genes is called?

Accepted Answer

trait(s)

Answer

gene(s)

Answer

genotype(s)

Answer

feature(s)

Question 16

In sexually reproducing organisms, how many versions of genes does each parent contribute to the offspring?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 17

When sexually-reproducing organisms have more than one offspring and get the same amount of genetic information, why do they appear different from each other?

Accepted Answer

because alleles are passed down from parent to offspring randomly

Answer

because one offspring can get more DNA from the father than the mother

Answer

because one offspring can get more DNA from the mother than the father

Answer

all options are possible

Question 18

Why might an offspring look more like its father than its mother?

Accepted Answer

because the father has more dominant traits

Answer

because the mother gave more genetic information

Answer

because the mother has more dominant traits

Answer

because the father gave more genetic information

Question 19

EACH parent provided ______ of your genes.

Accepted Answer

50%

Answer

25 %

Answer

75%

Answer

100%

Question 20

Brown eyes are an example of a .

Accepted Answer

phenotype

Answer

genotype

Question 21

All of these are examples of . Aa, DD, bB, yy

Accepted Answer

genotypes

Answer

phenotypes

Question 22

A mutation is best described as?

Accepted Answer

a change in a DNA sequence

Answer

the formation of a DNA sequence

Answer

the base of a DNA sequence

Answer

the copy of a DNA sequence

Question 23

Labrador retrievers can be black, yellow, or chocolate in color. This is due to a mutation that neither hurts nor helps them, therefore, it is a                     mutation.

Accepted Answer

neutral

Answer

harmful

Answer

helpful

Answer

All answers are correct.

Question 24

Mutations can                 .

Accepted Answer

All answers are correct.

Answer

be passed from parents to offspring

Answer

be due to copying errors

Answer

affect an organism's ability to live

Question 25

Cancers can be caused by                   mutations.

Accepted Answer

harmful

Answer

neutral

Answer

beneficial

Answer

natural

Question 26

Mutations create               that aid in the process of natural selection.

Accepted Answer

variations

Answer

colors

Answer

organisms

Answer

plants

Question 27

Mutations can be caused by environmental factors such as chemicals or from ionizing radiation from the Sun.

Accepted Answer

True

Answer

False

Question 28

An observable trait is one you can see.

Accepted Answer

True

Answer

False

Question 29

Which type of mutation is when one base is changed for another?

Accepted Answer

Substitution

Answer

Deletion

Answer

Insertion

Answer

All answers are correct

Question 30

Which type of mutation is when an extra base is added to the copy?

Accepted Answer

Insertion

Answer

Deletion

Answer

Substitution

Answer

All answers are correct

Question 31

Which type of mutation is when a base is removed from the copy?

Accepted Answer

Deletion

Answer

Insertion

Answer

Substitution

Answer

All answers are correct

Question 32

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 33

What is the probability of heterozygous offspring?

Accepted Answer

50%

Answer

25%

Answer

0%

Answer

100%

Question 34

What allele combination should go in the missing box?

Accepted Answer

Aa

Answer

AA

Answer

aa

Answer

none of these

Question 35

In the Punnett square shown, what must the genotype of the missing parent be?

Accepted Answer

Bb

Answer

BB

Answer

bb

Answer

Tt

Heredity Quiz Study Guide

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