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Genetics Quiz

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.
Genetics is the study of
a)
how animals live in their environment.
b)
how offspring have DNA.
c)
why animals, plants, and people exist.
d)
how traits are passed from parents to their offspring.
2.
Who is the founder of modern genetics?
a)
Albert Einstein
b)
Sir Isaac Newton
c)
Gregor Mendel
d)
Abraham Lincoln
3.
Which of the following is not an example of an inherited trait?
a)

Having a widow's peak

b)

Attached earlobes

c)

Interest in sports

d)

Eye color

4.

Which of the following statements is true?

a)
A dominant allele will express itself over the paired recessive allele.
b)
Offspring are the blend of traits given by both parents,.
c)
Dominant and recessive alleles will blend together to make a trait.
d)
A recessive allele will express itself over the paired dominant allele.
5.
Inherited behaviors that organisms are born knowing are called ________.
a)
traits
b)
genes
c)
instincts
d)
learned behaviors
6.
Alleles are ______________.
a)
different versions of the same gene.
b)
characteristics that make organisms different from another.
c)
traits learned after birth.
d)
learned behaviors after birth.
7.

If having red flowers (R) is dominant over white flowers (r) and a plant's genotype is Rr, what would their phenotype for the trait be?

a)

Pink flowers

b)

No flowers

c)

White flowers

d)

Red flowers

8.
Which of the following genotypes is not homozygous?
a)

RR

b)

Jj

c)

zz

d)

WW

9.

Which possible offspring genotype should go inside the blank square?

a)

WW

b)

Ww

c)

ww

10.

What is the correct genotype probability of the offspring of two pea plants in this Punnett square?

a)

PP: 25% Pp: 50% pp: 25%

b)

PP: 50% Pp: 25% pp: 25%

c)

PP: 25% Pp: 25% pp: 25%

d)

PP: 50% pp: 50%

11.

If (P) is dominant for "purple" flower trait in pea plants and (p) is recessive for "white" flower in pea plants, what is the phenotype probability of the offspring?

a)

Purple: 50% White: 50%

b)

Purple: 75% White: 25%

c)

Purple: 25% White: 25% Light purple: 50%

d)

Purple: 25% White: 75%

12.

Genes that have two different alleles are called:

a)

Homozygous

b)

Genotype

c)

Phenotype

d)

Heterozygous

13.

Genes that have two identical alleles are called:

a)

Homozygous

b)

Genotype

c)

Phenotype

d)

Heterozygous

14.

The physical characteristics of a trait that can be seen are called:

a)

Homozygous

b)

Phenotype

c)

Genotype

d)

Heterozygous

15.

The genetic makeup of an individual is called:

a)

Homozygous

b)

Phenotype

c)

Genotype

d)

Heterozygous

16.

All the DNA that makes up one trait is called:

a)

DNA

b)

Gene

c)

Chromosome

17.

The structure that carries all the genetic information of an organism is called:

a)

DNA

b)

Gene

c)

Chromosome

18.

A chain of genetic instructions of an organism is called:

a)

DNA

b)

Gene

c)

Chromosome

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