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Genetics/Meiosis

Total questions: 45

Worksheet time: 2hrs 49mins

Name
Class
Date
1.

The genetic makeup of an organism is their

a)

allele

b)

genotype

c)

phenotype

d)

karyotype

2.
What describes the physical appearance of a trait?
a)
allele
b)
genotype
c)
phenotype
d)
karyotype
3.
If alleles look like Aa in a genotype it is said to be
a)
homozygous
b)
heterozygous
c)
incomplete dominant
d)
codominant 
4.

This allele is covered up when a dominant allele is present

a)

recessive

b)

dominant

c)

incomplete dominance

d)

co-dominant

5.
If two heterozygous tall plants are crossed, and tall is dominant. What would be your expected phenotypes?
a)
100% tall
b)
75% tall, 25%short
c)
50% tall, 50%short
d)
25% tall, 75% short
6.

Cells created at the end of meiosis are best known as

a)

somatic cells

b)

gamete cells

c)

skin cells

d)

diploid cells

7.
What is being depicted in this picture?
a)
sexual reproduction
b)
anaphase I of meiosis
c)
crossing-over
d)
replication
8.
The inherited combination of alleles is known as the offspring's
a)
heredity
b)
phenotype
c)
genotype
d)
redigree
9.

The color purple (P) is dominant to the color white (p). According to the Punnett Square, what is the probability of an offspring being white?

a)

0%

b)

25%

c)

50%

d)

75%

10.

In a genotype, what does the lower case letter represent?

a)

Recessive

b)

Dominant

11.

Which sex chromosome combination is for a female?

a)

XY

b)

XX

c)

YY

d)

XXY

12.

Different versions or forms of the same gene are called —

a)

Sex Cells

b)

Chromosomes

c)

Alleles

d)

Nitrogen Bases

13.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
14.

Having two of the same genes for the trait (sometimes called purebred).

a)

homozygous

b)

hetrozygous

c)

protein

d)

chromosome

15.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
16.
Term for an organism that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
17.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
18.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
19.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
20.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
21.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
22.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
23.

There are more than 2 variations of an allele

a)

regulatory genes

b)

multiple alleles

c)

mendelian inheritance

24.
phenotypes that is a blend of the heterozygous gene pair
a)
incomplete dominance
b)
multiple alleles
c)
regulatory genes
25.

In this pedigree, the shaded individuals represent family members that CAN roll their tongue. How many males in the 2nd generation can roll their tongue?

a)

1

b)

2

c)

3

d)

5

26.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
27.
Two heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
28.
How many chromosomes are in a sex cell?
a)
46
b)
23
c)
26
d)
43
29.

If a black guinea pig (BB) and a white guinea pig (bb) mate, there is a ______ chance that a white guinea pig will be born.

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

30.
What type of heredity is shown in the pedigree?
(hint: check your notes - "modes of inheritance")
a)
Sex-Linked Dominant
b)
Sex-Linked Recessive
c)
Autosomal Dominant
d)
Autosomal Recessive 
31.

A purebred horse with white hair is crossed with a purebred horse with brown hair. Each of their offspring has both white and brown hair. Why does this occur?

a)

several alleles work together to determine a trait

b)

two alleles for hair are dominant

c)

two alleles for hair are recessive

d)

the alleles for fur color are neither dominant or recessive

32.
A woman heterozygous for A blood marries a man heterozygous for B blood. What is the probability that they will produce offspring with AB blood?
a)
0%
b)
25%
c)
50%
d)
75%
33.
What is the chance of two parents with blood types AB and O producing an offspring with blood type O?
a)
0%
b)
25%
c)
50%
d)
100%
34.
Red-green color blindness is an X-linked recessive trait. A red-green color-blind woman and a red-green color-blind man have a son. What is the probability that the son is also red-green color-blind?
a)
0%
b)
25%
c)
50%
d)
100%
35.
A man with type O blood has children with a woman who is heterozygous for type A blood. What is the probability that their children will have type A blood?
a)
0%
b)
25%
c)
50%
d)
100%
36.

Which type of inheritance is represented in the problem below:

In hamsters, brown and white are equally expressed. A brown hamster crosses with a heterozygous hamster. What is this inheritance pattern?

a)

Simple Dominance

b)

Codominance

c)

Incomplete Dominance

d)

Blood Types

e)

Sex-Linked

37.

Which type of inheritance is represented in the problem below:


Snapdragon flowers can be red, white, or pink. A red flower crosses with a pink flower. What is inheritance pattern?

a)

Simple Dominance

b)

Codominance

c)

Incomplete Dominance

d)

Blood Types

e)

Sex-Linked

38.

If a black sheep mates with a white sheep, their offpsring will all be GRAY. This is an example of which type of inheritance?

a)

Incomplete Dominance

b)

Codominance

c)

Sex-Linked Inheritance

d)

Recessive Inheritance

39.
Red tulips when crossed with white tulips produce (heterozygous) pink tulips. This is an example of which type of inheritance?
a)
Multiple Allele Blood Types
b)
Sex-Linked
c)
Incomplete Dominance
d)
Codominance
40.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
41.

What is the chromosomal condition of the individual whose karyotype is seen in the image?

a)

Turner's Syndrome

b)

Trisomy 21 (Down Syndrome)

c)

Trisomy 13

d)

Trisomy 18 (Edwards' syndrome)

42.
What is the chromosomal condition of the individual whose karyotype is seen in the image?
a)
Trisomy 21 (Down Syndrome)
b)
Trisomy 13
c)
Trisomy 18
d)
Klinefelter's Syndrome
43.
If a red blood cell has no antigens on its surface, what is its blood type?
a)
A
b)
B
c)
AB
d)
O
44.
What is the genotype of a person who is heterozygous for type B blood?
a)
IBIB
b)
IBi
c)
IAIB
d)
IAi
45.
What is the genotype of a person with type A blood, who had a father with type O blood?
a)
IAIB
b)
IA i
c)
IAIA 
d)
ii

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