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Genetics Quiz #2-Punnett Squares

Total questions: 34

Worksheet time: 46mins

Name
Class
Date
1.
The genotypic percentage resulting from this this cross would be _____________________.
a)
25% blue eye 75 % brown eye 
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
2.
The dominant trait as seen in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
3.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
4.
___________________________ is the study of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
5.
A ________________________ is a tool used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
6.
Two brown eyed parents which are  both heterozygous(Bb) have a baby. What is the possibility of the baby being blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
7.
Red flower (R) color is dominant to white flower (r) color in rose plants. What is the  expected phenotypic results of a cross between two heterozygous (Rr) rose plants?
a)
100% red
b)
75% red, 25% white
c)
50% red, 50% white
d)
75% white, 25% red
8.
How many alleles (letters) does a child get from EACH parent for each trait?
a)
1
b)
2
c)
3
d)
4
9.
What term describes what you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
10.

In a heterozygous genotype, the ___________ allele will be expressed in the phenotype.

a)

recessive

b)

dominant

c)

lower case letter

d)

both

11.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
12.
What is another way of saying "hybrid"?
a)
heterozygous
b)
homozygous dominant
c)
homozygous recessive
d)
none of these choices
13.
Two heterozygous parents produce offspring. What is the probability of the HETEROZYGOUS GENOTYPE appearing in the offspring generation?
a)
75%
b)
25%
c)
50%
d)
100%
14.
Two heterozygous parents produce offspring. What is the probability of the HOMOZYGOUS DOMINANT GENOTYPE appearing in the offspring generation?
a)
75%
b)
25%
c)
50%
d)
100%
15.
HH crossed with Hh. What is the probability of hh?
a)
0%
b)
25%
c)
50%
d)
100%
16.
What is another way of saying "purebred"?
a)
homozygous
b)
dominant
c)
recessive
d)
heterozygous
17.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Matthias Schleiden
18.

What is the result of meiosis?

a)

2 genetically different cells

b)

4 genetically different cells

c)

4 identical cells

d)

2 identical cells

19.

What event leads to a diploid zygote?

a)

Meiosis

b)

Mitosis

c)

Fertilization

d)

G2 cycle

20.

If a human has 46 chromosomes, which number is the haploid number?

a)

46

b)

92

c)

23

d)

11

21.

In humans, which cell is considered to be haploid?

a)

gametes

b)

skin cell

c)

muscle cell

d)

nervous cell

22.

What is the phenotypic ratio of this heterozygous two-trait (dihybrid) cross ?

a)

8:8

b)

9:3:3:1

c)

16

d)

1:15

23.

What cell determines the sex of the organism?

a)

sperm cell

b)

egg cell

24.

Multiple Response.

In addition to donating half of the chromosomes, the sperm cell will donate either an ____ or a ____ to determine the sex of the organism.

a)

X

b)

Y

c)

Z

d)

46

25.

There is a ____ % chance that an offspring can be female.

a)

25

b)

50

c)

75

d)

100

26.

The letters outside the Punnett Square represent the ________ in the sperm or egg cells of the parents.

a)

alleles

b)

genotype

c)

phenotype

d)

mitosis

27.

The scientific term used to describe egg cells or sperms cells is ____________.

a)

gametes

b)

somatic cells

c)

autosomes

d)

karyotype

28.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
29.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
30.
A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called
a)
sister chromotids
b)
centromeres
c)
homologous chromosomes
d)
autosomes
31.
A sperm contains
a)
Both an X and a Y chromosome
b)
Two X chromosomes
c)
An X OR a Y chromosome
d)
only a Y chromosome
32.
An egg contains
a)
22 autosomes and an X chromosome
b)
22 autosomes and an Y chromosome
c)
44 autosomes and 2 X chromosomes
d)
44 autosomes and an X and a Y chromosome
33.
What is the sex of this individual?
a)
female
b)
male
34.
Down's syndrome occurs because of a(n)
a)
missing sex chromosome
b)
extra sex chromosome
c)
additional 21st chromosome
d)
additional 18th chromosome

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