Genetics Practice Test

Question 1

Which of the following is the study of heredity?

Answer 1

genetics

Question 2

The passing of genetic material from parent to offspring is called

Answer 2

heredity

Question 3

Dad is colorblind which is a sex-linked and recessive trait, but mom is not colorblind. How is it possible that this couple has a colorblind daughter?

Answer 3

if mom is heterozygous

Question 4

Chromosomes numbered 1-44 in humans are the

Answer 4

autosomes

Question 5

Which type of gene gets covered up by another?

Answer 5

recessive

Question 6

Different forms of the same gene are called

Answer 6

alleles

Question 7

If an individual has the following genotype, Hhrr, what are the possible gametes?

Answer 7

Hr, Hr, hr, hr

Question 8

When sperm and egg come together, a(n) ______ forms.

Answer 8

zygote

Question 9

How many genes does an organism get from its parents for each characteristic?

Answer 9

1

Question 10

Which of the following is a homozygous recessive genotype?

Answer 10

nn

Question 11

Which if the following genotypes is considered heterozygous?

Answer 11

Rr & X^A X^a

Question 12

What are non-sex chromosomes called?

Answer 12

autosomes

Question 13

The last chromosomes in humans (#45 & 46) are the

Answer 13

sex chromosomes

Question 14

A person with type AB blood can never have a child with type O blood.

Answer 14

True

Question 15

Which of the following states that each pair of alleles segregate independently during meiosis?

Answer 15

law of independent assortment

Question 16

Genes for sex-linked traits are generally carried on Y chromosome.

Answer 16

False

Question 17

If mom has blood type A and dad has blood type B, can they have a child with blood type O?

Answer 17

yes, if mom is I^Ai and dad is I^Bi

Question 18

Which if the following states that each allele in pair separates into different gamete during meiosis?

Answer 18

law of segregation

Question 19

Which if the following refers to having the exact same alleles?

Answer 19

homozygous dominant, homozygous recessive

Question 20

With incomplete dominance, we can see the phenotypic difference between a heterozygous and homozygous individual.

Answer 20

True

Question 21

Which type of a gene can cover up another?

Answer 21

dominant

Question 22

The physical characteristic that is expressed is the

Answer 22

phenotype

Question 23

A(n) ____ is a specific part of a chromosome that determined a trait.

Answer 23

gene