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Inheritance and Variation

Total questions: 21

Worksheet time: 14mins

Name
Class
Date
1.

Long, tightly-wound, strands of DNA are called.....

a)

genes

b)

chromosomes

c)

traits

2.

Different versions of a gene are called........

a)

variations

b)

traits

c)

alleles

d)

chromosomes

3.

A characteristic passed from parent to offspring

a)

variation

b)

inherited trait

c)

gene

d)

chromosome

4.

The difference that occurs from a mixture of genes

a)

variation

b)

inherited trait

c)

gene

d)

chromosome

5.

The offspring of asexually reproducing organisms have genes that are _________ to that of their parent.

a)

diifferent

b)

identical

6.

The offspring of sexually reproducing organisms have genes that are ________ from that of their parents.

a)

different

b)

identical

7.

Humans inherit traits from their

a)

parents

b)

children

c)

brothers and sisters

8.

In sexually reproducing organisms, each parent contributes ___________ of the genes acquired by the offspring.

a)

all

b)

half

c)

none

9.

What type of diagram to genetics use to predict genotype and phenotypes percentages of potential offspring?

a)

Venn Diagram

b)

Punnett Square

c)

Frayer Model

10.

A dominant allele is represented with a

a)

capital letter

b)

lowercase letter

11.

A recessive allele is represented with a

a)

capital letter

b)

lowercase letter

12.

If an individual's genotype for eye color is (Bb) what color will their eyes look if (B) is dominant and represents brown eyes and (b) is recessive and represents blue eyes?

a)

brown eyes

b)

blue eyes

13.

Which trait will show if an individual has 1 dominant and 1 recessive allele for a trait?

a)

the dominant trait

b)

the recessive trait

14.

What is an example(s) of a phenotype? (SELECT ALL THAT APPLY)

a)

Curly Hair

b)

GG

c)

Gg

d)

Straight Hair

15.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
16.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
17.

Double eyelids are dominant (E) to normal eyelids (e). What is the genotype(s) for someone who has double eyelids?

a)

ee

b)

Ee, ee

c)

EE, Ee

d)

EE

18.

Widows peak is recessive (w) to straight hair (W). What would be the corresponding phenotype for an individual who expresses the genotype (Ww).

a)

Widows Peak

b)

Straight

19.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
20.
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?
a)
0%
b)
25%
c)
50%
d)
75%
21.

Hand span is an example of continuous variation whereas the presence of dimples is an example of what variation?

(a)