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WC Genetics 2021

Total questions: 25

Worksheet time: 30mins

Name
Class
Date
1.

Which of the following is considered homozygous?

a)

Hh

b)

XH Y

c)

RR

d)

SsHh

2.

Which of the following is considered a phenotype?

a)

XHXH

b)

Blonde hair

c)

Rr

d)

Karyotype

3.

If HH is crossed with hh, what is the probability that the offspring has the genotype HH?

a)

0%

b)

25%

c)

50%

d)

100%

4.

In codominance, a homozygous red flower is crossed with a homozygous white flower. What would their offspring look like?

a)

Red

b)

White

c)

Pink

d)

Red and white

5.

If mother has type B blood (heterozygous) and father has type A blood (heterozygous). What is the probability of having a type O baby?

a)

0 out of 4

b)

1 out of 4

c)

2 out of 4

d)

4 out of 4

6.

(R) is red, (W) is white. In incomplete dominance what would be the probability of getting a red flower if you cross two pink (RW) flowers?

a)

)%

b)

25%

c)

50%

d)

75%

7.

What is the result if you FOIL the following genotype: DdFF

a)

Dd FF DD ff

b)

Df Df DF DF

c)

DF DF dF dF

d)

df df df df

8.

When you are making a punnett square that shows 2 traits it is called

a)

monohybrid

b)

non-mendelian

c)

dihybrid

9.

XX

a)

male

b)

female

10.

XY

a)

male

b)

female

11.

The inheritance of one trait has no effect on the inheritance of another trait.

a)

Principle of Independent Assortment

b)

Homologous pair

c)

Dominant

d)

Heterozygous

12.

Do a punnett square for the following cross: RRyy x RrYy. What are the chances of the offspring being heterozygous for both?

a)

0%

b)

25%

c)

50%

d)

75%

13.

One allele is not completely dominant over the other causing a blend of alleles in a heterozygous condition

a)

codominance

b)

multiple alleles

c)

incomplete dominance

14.

Condition in which both alleles for a gene are expressed when present in a heterozygous condition

a)

Incomplete dominance

b)

Codominance

c)

Multiple Alleles

15.

HH is considered

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous recessive

d)

heterozygous dominant

16.

Yy is considered

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

d)

homozygous

17.

____________ only shown when an organism has two alleles for that gene, represented by lowercase letters

a)

dominant

b)

recessive

c)

allele

d)

gene

18.

Another way to say heterozygous (Hh) is

a)

purebred

b)

hybrid

c)

recessive

d)

dominant

19.

In cats black (B) is dominant to white (b) and long hair (H) is dominant to short hair (h). What would the cross look like between a heterozygous black, short haired cat with a white, short haired cat?

a)

BBHH x bbhh

b)

BbHH x BBHH

c)

Bbhh x bbhh

d)

bbhh x bbhh

20.

Which word would help you remember incomplete dominance?

a)

both

b)

blend

c)

allele

d)

gene

21.
a)

RR

b)

Rr

c)

rr

d)

RW

22.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Justin Bieber
23.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
24.
Is this punnet square true or false?
a)
False, because there should be 3 dominate alleles.
b)
True.
c)
False, because There should be 3 recessive alleles.
d)
I don't know....
25.
Why are your chromosomes arranged in pairs?
a)
Scientists have no idea
b)
Because you get one from your mom and one from your dad
c)
Because pairs can divide easier
d)
Because DNA is awesome