WorksheetsChromosomes and Meiosis
Total questions: 25
Worksheet time: 23mins
Name
Class
Date
1.
If a diploid cell from a worm has 60 chromosomes, how many will be in one egg cell (gamete)?
a)
60
b)
30
c)
15
d)
120
2.
What gender has an X and a Y chromosome?
a)
Male
b)
Female
3.
What is the sex of this baby?
a)
Male
b)
Female
4.
What type of chromosomal abnormality do people with Down Syndrome have?
a)
trisomy 21
b)
monosomy 21
c)
trisomy 18
d)
monosomy 17
5.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
cytokinesis
6.
Meiosis occurs in the testes of men and in the ___________ of women.
a)
uterus
b)
cervix
c)
ovaries
d)
brain
7.
The chromosomes that pair up during meiosis, are called __________ chromosomes.
a)
homozygous
b)
sister
c)
homologous
d)
daughter
8.
Crossing over helps promote
a)
male genotypic traits
b)
genetic variation
c)
DNA replication
d)
meiosis
9.
The result of meiosis is:
a)
two diploid cells
b)
two haploid cells
c)
four diploid cells
d)
four haploid cells
10.
How many times in meiosis does the cell divide (cytokinesis)?
a)
2
b)
4
c)
3
d)
1
11.
The haploid number for a human cell is
a)
23
b)
46
c)
92
d)
12
12.
The yellow part of this picture is DNA. What do you think the turquoise part around it is?
a)
chromosome
b)
gene
c)
DNA
d)
nucleus
13.
You get one homologous chromosome from your ________ and one from your _______.
a)
dad, mom
b)
brother, sister
c)
grandmother, grandfather
d)
the stork, the stork
14.
Which term describes the position of a gene on a chromosome?
a)
Locus
b)
Allele
c)
Centromere
d)
Diploid
15.
What is shown by this karyogram?
a)
A female with Down syndrome
b)
A male with Down syndrome
c)
A normal female
d)
A normal male
16.
What is a picture used to examine chromosomes called?
a)
Sonogram
b)
Electrocardiogram
c)
X-Ray
d)
Karyotype
17.
What type of mutation is this?
a)
Deletion
b)
Inversion
c)
Duplication
d)
Substitution
18.
The cause of many genetic disorders, like Down Syndrome, is...
a)
Nondisjunction
b)
Overfertilization
c)
Uncontrolled Meiosis
d)
Translocation
19.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
mutagenesis
c)
hybridization
d)
fertilization
20.
Why do we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To half the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
21.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
22.
You inherited...
a)
most of your chromosomes from your mother
b)
most of your chromosomes from your father
c)
a random number of chromosomes from each parent
d)
half your chromosomes from your mother and half from your father.
23.
What phase is shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
24.
A female inherits an ____ from the egg and an ____ from the sperm.
a)
X, X
b)
Y, X
c)
X, Y
d)
X, W
25.
The two parts of a double-stranded chromosome are held together by a...
a)
chromatid
b)
spindle fiber
c)
centromere
d)
centriole
100 %
