Quiz about Genetics Test

Question 1

The science of how genes control traits is _____________.

Accepted Answer

genetics

Answer

heredity

Answer

homozygous

Answer

heterozygous

Question 2

Two of the same genes controlling a trait (BB or bb) is _________.

Accepted Answer

homozygous

Answer

heredity

Answer

genetics

Answer

heterozygous

Question 3

The passing of traits from parent to offspring is _________.

Accepted Answer

heredity

Answer

genetics

Answer

homozygous

Answer

heterozygous

Question 4

Two different genes controlling a trait (Bb) is __________.

Accepted Answer

heterozygous

Answer

heredity

Answer

genetics

Answer

homozygous

Question 5

The gene combinations for an organism is ___________.

Accepted Answer

genotype

Answer

Gregor Mendel

Answer

phenotype

Answer

Punnett Square

Question 6

The "Father of Genetics" is ___________.

Accepted Answer

Gregor Mendel

Answer

genotype

Answer

phenotype

Answer

Robert Hooke

Question 7

The physical expression from the gene combination is ___________.

Accepted Answer

phenotype

Answer

hybrid

Answer

genotype

Answer

Punnett Square

Question 8

A tool used to predict possible outcomes of a cross is called a _______________.

Accepted Answer

Punnett Square

Answer

purebred

Answer

genotype

Answer

phenotype

Question 9

A trait that is seen only if the dominant trait is absent is a _________.

Accepted Answer

recessive trait

Answer

dominant trait

Answer

pedigree

Answer

karyotype

Question 10

A trait that is always seen if present is a ___________.

Accepted Answer

dominant trait

Answer

recessive trait

Answer

pedigree

Answer

karyotype

Question 11

A tool that is used to trace a trait through a family is called a _____________.

Accepted Answer

pedigree

Answer

dominant trait

Answer

recessive trait

Answer

karyotype

Question 12

An organized display of a person's chromosomes is called a _____________.

Accepted Answer

karyotype

Answer

dominant trait

Answer

recessive trait

Answer

pedigree

Question 13

Each gene in a pair of genes is called a/an _______________.

Accepted Answer

allele

Answer

gene

Answer

mitosis

Answer

meiosis

Question 14

The section on a chromosome that controls traits is called a/an ____________.

Accepted Answer

gene

Answer

allele

Answer

mitosis

Answer

meiosis

Question 15

Cell division that produces sex cells (egg and sperm) is called _______________.

Accepted Answer

meiosis

Answer

gene

Answer

allele

Answer

mitosis

Question 16

Cell division that produces body cells is called _____________.

Accepted Answer

mitosis

Answer

gene

Answer

allele

Answer

meiosis

Question 17

A small section of DNA, humans have 23 pairs is called ____________.

Accepted Answer

chromosomes

Answer

DNA

Answer

egg

Answer

sperm

Question 18

A long, twisted, double helix molecule found inside the nucleus is called ______________.

Accepted Answer

DNA

Answer

chromosome

Answer

egg

Answer

sperm

Question 19

The male sex cell is called a/an ______________.

Accepted Answer

sperm

Answer

DNA

Answer

chromosome

Answer

egg

Question 20

The female sex cell is called a/an _____________.

Accepted Answer

egg

Answer

DNA

Answer

chromosome

Answer

sperm

Question 21

A Punnett Square is used to determine the

Accepted Answer

probable outcome of a cross.

Answer

actual outcome of a cross.

Answer

result of meiosis I.

Answer

sorting of DNA.

Question 22

Which is NOT an example of Natural Selection ("Survival of the Fittest")?

Accepted Answer

Scientists selectively cross watermelons to produce seedless watermelons.

Answer

Sick and/or old prey (like elk) are killed first by predators (like wolves).

Answer

An arctic hair born with a mutation that results in black hair will be killed first by predators.

Answer

Giraffes with long necks are able to obtain food easier and will be more likely to survive than giraffes with short necks.

Question 23

Why is it that males are most often affected by sex-linked disorders?

Accepted Answer

Because the Y chromosome is not a full chromosome and there is nothing there to dominate the recessive trait on the X.

Answer

Because males are the weaker sex.

Answer

Because the X chromosome is not a full chromosome and there is nothing there to dominate the recessive trait on the Y.

Answer

Because males have two X chromosomes.

Question 24

Which of the following is NOT an example of a sex-linked disorder?

Accepted Answer

blue eyes

Answer

hemophilia

Answer

color-blindness

Answer

male pattern baldness

Question 25

The changing of traits in an organism is called a ______________.

Accepted Answer

mutation

Answer

natural selection

Answer

cloning

Answer

selective breeding

Question 26

A Widow's Peak is a dominant trait in humans. A homozygous dominant father (WW) and a homozygous recessive mother (WW) will have children that

Accepted Answer

Have a Widow's Peak AND are heterozygous for this trait

Answer

have a Widow's Peak

Answer

are heterozygous

Answer

do not have a Widow's Peak

Question 27

Scientists use ________________ to encourage the best traits in organisms.

Accepted Answer

selective breeding

Answer

natural selection

Answer

mutations

Answer

cloning

Question 28

The trait of tongue-rolling is a dominant trait in humans. A homozygous recessive father and a homozygous dominant mother have a child. The phenotype of the father is

Accepted Answer

non-tongue-roller

Answer

unable to be determined

Answer

homozygous recessive

Answer

tongue-roller

Question 29

The trait of tongue-rolling is a dominant trait in humans. A homozygous recessive father and a homozygous dominant mother have a child. What is the probability that the offspring of this cross will be able to roll their tongues?

Accepted Answer

4/4 or 100%

Answer

1/4 or 25%

Answer

2/4 or 50%

Answer

3/4 or 75%

Question 30

The trait of tongue-rolling is a dominant trait in humans. A homozygous recessive father and a homozygous dominant mother have a child. Which of the following statements is INCORRECT for the possible offspring for this cross?

Accepted Answer

None of the offspring will be able to roll their tongues.

Answer

All of the offspring will be able to roll their tongues.

Answer

All of the offspring are heterozygous.

Answer

All of the offspring are hybrids.

Question 31

The trait of attached earlobes is a recessive trait in humans. A father who is heterozygous for free earlobes and a mother who has attached earlobes have a child. The genotype of the mother is

Accepted Answer

ee

Answer

attached earlobes

Answer

Ee

Answer

unable to be determined

Question 32

The trait of attached earlobes is a recessive trait in humans. A father who is heterozygous for free earlobes and a mother who has attached earlobes have a child. What percentage of the offspring would have attached earlobes?

Accepted Answer

2/4 or 50%

Answer

1/4 or 25%

Answer

3/4 or 75%

Answer

4/4 or 100%

Question 33

The trait of attached earlobes is a recessive trait in humans. A father who is heterozygous for free earlobes and a mother who has attached earlobes have a child. What percentage of the offspring would be heterozygous for this trait?

Accepted Answer

2/4 or 50%

Answer

1/4 or 25%

Answer

3/4 or 75%

Answer

4/4 or 100%

Question 34

A mother who is a carrier for the sex-linked disorder, hemophilia, marries a normal father. Which offspring will show the trait of hemophilia?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Answer

None

Question 35

A mother who is a carrier for the sex-linked disorder, hemophilia, marries a normal father. What percentage of the offspring will be a carrier for the trait of hemophilia?

Accepted Answer

25%

Answer

100%

Answer

75%

Answer

50%

Answer

0%

Question 36

A mother who is a carrier for the sex-linked disorder, hemophilia, marries a normal father. What is the chance that one of their girls will have hemophilia?

Accepted Answer

0%

Answer

100%

Answer

75%

Answer

50%

Answer

25%

Question 37

A mother who is a carrier for the sex-linked disorder, hemophilia, marries a normal father. Offspring D is

Accepted Answer

a normal male

Answer

a male with hemophilia

Answer

a carrier male

Answer

a normal female

Question 38

This chart traces the trait of freckles through three generations. Freckles is a dominant trait in humans. The chart can best be described as a

Accepted Answer

Pedigree

Answer

Punnett Square

Answer

Family Tree

Answer

Karyotype

Question 39

This chart traces the trait of freckles through three generations. Freckles is a dominant trait in humans. How many children and what gender did the parents from Generation I have?

Accepted Answer

Three children, 1 girl and 2 boys.

Answer

Three children, 1 boy and 2 girls.

Answer

Four children, 2 boys and 2 girls.

Answer

Four children, all boys.

Question 40

This chart traces the trait of freckles through three generations. Freckles is a dominant trait in humans. What is the genotype of Individual #1 in Generation II?

Accepted Answer

ff

Answer

Ff

Answer

FF or Ff

Answer

unable to be determined

Question 41

This chart traces the trait of freckles through three generations. Freckles is a dominant trait in humans. Which statement is true about Individual #4 in Generation II?

Accepted Answer

The individual is homozygous recessive for the trait of freckles.

Answer

The individual is a biological child of individuals #1 & 2 from Generation I.

Answer

The individual is heterozygous for the trait of freckles.

Answer

The individual has freckles.

Question 42

This chart traces the trait of freckles through three generations. Freckles is a dominant trait in humans. Which statement is TRUE about Generation III?

Accepted Answer

One has freckles and one does not.

Answer

They are both males.

Answer

They have the same genotype and phenotype.

Answer

They have different genotypes but the same phenotype.

Question 43

From the "Crazy Traits" lab, what information did the letters on the blue and green coins indicate? Both coins were heterozygous (Tt) and were flipped to determine physical traits of your creature.

Accepted Answer

genotype

Answer

phenotype

Answer

gender

Question 44

Therapeutic cloning is

Accepted Answer

making "spare parts" to help the sick by creating replacement organs or tissues

Answer

illegal

Answer

making an exact copy of an animal or person

Answer

not a way to help treat diseases

Question 45

Reproductive cloning is

Accepted Answer

making an exact copy of an animal or person

Answer

illegal

Answer

making "spare parts" to help the sick by creating replacement organs or tissues

Answer

impossible in mammals

Question 46

Purebred is another word for homozygous.

Accepted Answer

True

Answer

False

Question 47

Male sex chromosomes are represented by XX.

Accepted Answer

False

Answer

True

Question 48

Female sex chromosomes are represented by XY.

Accepted Answer

False

Answer

True

Question 49

It is IMPOSSIBLE for offspring to display (phenotype) a trait that their parents do not display.

Accepted Answer

False

Answer

True

Question 50

If a child looks more like their father than their mother, this means that they got more genes from their father.

Accepted Answer

False

Answer

True

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