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Unit 6 CB

Total questions: 53

Worksheet time: 39mins

Name
Class
Date
1.
Meiosis occurs in the testes in men and the ___________ in women.
a)
uterus
b)
cervix
c)
ovaries
d)
stomach
2.

A cat has a total of 40 chromosomes in its body cells. How many in its sex cells?

a)

38

b)

20

c)

76

d)

10

3.
The process of crossing over occurs in what meiotic phase?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
4.

Meiosis would occur in which of these cells?

a)

skin cells

b)

liver cells

c)

brain cells

d)

sperm cells

5.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
6.

In humans, sperm cell have ___________ chromosomes and are ___________________, while skin cells have _____________ chromosomes are are diploid.

a)

23. haploid. 46 diploid

b)

46. haploid. 23. diploid

c)

23 diploid. 46 haploid

d)

46. diploid. 23. haploid.

7.
Crossing over helps promote ?
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
8.
With mitosis you get ___, _________ cells, but with meiosis, you get ___, ____________.
a)
4 different, 2 identical
b)
4 identical, 2 different
c)
2 different, 4 identical
d)
2 identical, 4 different
9.
The purpose of meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
10.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
11.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
12.
Which best describes the process shown?
a)
mutation in which the DNA content of the gene is ltered
b)
segregation of sister chromatids
c)
condensation and segregation of the alleles
d)
crossing-over which alleles are exchanged
13.
If an intestinal cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
14.
Each body cell in an erthworm contains 36 chromosomes.  HOw many chromosomes are in each of its gametes?
a)
54
b)
36
c)
72
d)
18
15.
What kind of cells are made in MEIOSIS?
a)
Haploid cells
b)
Diploid Cells
c)
Skin Cells
d)
Liver Cells
16.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
17.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad (pair of chromosomes, one from mom and one from dad)
b)
triad
c)
diploid
d)
quad (group of 4 replicated chromosomes, 2 from mom and 2 from dad)
18.
What phase is represented?
a)
metaphase 1
b)
metaphase 2
c)
anaphase 1
d)
anaphase 2
19.
What phase is  shown in the picture?
a)
metaphase 2
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
20.
How many daughter cells does Meiosis create?
a)
2
b)
4
c)
8
d)
1
21.
Goes through P.M.A.T two rounds 
a)
Mitosis
b)
Meiosis
c)
Osmosis
d)
Transcription
22.
When does replication of chromosomes occur in animal cell meiosis?
a)
Before Meiosis I and Meiosis II
b)
Before Meiosis II Only
c)
Before Meiosis I Only
d)
During Prophase I and Prophase II
23.

Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes and event that results from mitosis but NOT meiosis?

a)

two stages of cell division

b)

replication of cellular genetic material

c)

daughter cells that are identical to the parent cell

d)

four daughter cells that are produced from each parent cell

24.

How are sexual reproduction and asexual reproduction different from each other?

a)

sexual reproduction requires two parents and asexual reproduction requires only one parent

b)

asexual reproduction requires two parents and sexual reproduction requires only one parent

c)

mutation rates are lower in sexual reproduction than in asexual reproduction

d)

asexual reproduction occurs only in multicellular organisms

25.

Which type of reproduction leads to increased genetic variation on a population?

a)

Parthenogenesis

b)

asexual reproduction

c)

Sexual reproduction

d)

Vegetative reproduction

26.

Which of the following phrases best describes cancer?

a)

absence of cyclins in the DNA

b)

multiple gene mutations on a chromosome of DNA

c)

uncontrolled cell growth caused by mutations in genes that control the cell cycle

d)

presence of genetic defects caused by hereditary disorders

27.

Which of the following phases of mitosis is represented by the diagram below?

a)

prophase

b)

metaphase

c)

anaphase

d)

telophase

28.

A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in which of the following? 

a)

zygote

b)

placenta

c)

testes of the father

d)

ovaries of the mother

29.

Which row in the chart below indicates the correct process for each event indicated? 

a)

1

b)

2

c)

3

d)

4

30.

The diagram below shows a cellular process that occurs in organisms. 

What is the name of this process? 

a)

meiosis

b)

mitosis

c)

endocytosis

d)

phagocytosis

31.

The diagram below shows homologous chromosomes during prophase I of meiosis.

Which of the following correctly describes the process being illustrated? 

a)

mutation in which the DNA content of the gene is altered

b)

segregation of sister chromatids

c)

condensation and segregation of alleles

d)

crossing-over in which alleles are exchanged

32.

Which of the following best describes meiosis? 

a)

It is carried out in all tissues that require cell replacement.

b)

It occurs only in cells in the reproductive structures of organisms. 

c)

It happens in all tissues except the brain and spinal cord.

d)

It is the first stage of mitosis. 

33.

The diagram below shows two strawberry plants.

Plant 2 is produced asexually from Plant 1. If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2?

a)

14

b)

28

c)

56

d)

112

34.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
35.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
36.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
37.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
38.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
39.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
40.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
41.
In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?
a)
Tall = T
Short = S
b)
Tall = T
Short = t
c)
Tall = t
Short = T
d)
Tall = TT
Short = tt
42.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
43.

Which of the following genotypes is homozygous dominant?

a)

Yy

b)

yY

c)

yy

d)

YY

44.

What is the genotypic ratio of the offspring?

a)

3:1

b)

1:3

c)

1:2:1

d)

2:2

45.

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

a)

50 % Brown fur and 50% White fur

b)

25 % Brown fur and 75% White fur

c)

75 % Brown fur and 25% White fur

d)

0% Brown fur and 100% White fur

46.
What are the possible genotypes for this cross?
(Click the picture to see it without the text)
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
47.
If you cross a black guinea pig with a white guinea pig and the offspring are gray, what type of dominant trait would that be.
a)
incomplete dominance
b)
codominance
c)
codependant
d)
cooperative
48.

B=Brown fur

b=tan fur

What percent of the offspring would be tan when you cross BbxBb?

a)

75%

b)

25%

c)

50%

d)

100%

49.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)
It is BB.
b)
It is Bb
c)
It is brown
d)
It is bb.
50.
This punnett square shows a cross between
a)
A hybrid Parent and a Homozygous parent
b)
A heterozygous parent and a heterozygous parent
c)
Two homozygous parents
d)
Two Hybrid Parents
51.
This is an example of
a)
Complete dominance
b)
Mendelian Genetics
c)
Codominance
d)
Incomplete Dominance
52.
 One dog carries homozygous, long-haired traits (SS), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.
a)
100%
b)
75%
c)
50%
d)
25%
53.
Why are there no white rabbit babies?
a)
The white gene is not present in any of the babies.
b)
It takes two recessive genes to show the trait.
c)
Grey is a better color.
d)
Baby five will be white.

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