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WorksheetsHuman Genetics Chapter 14
Total questions: 31
Worksheet time: 16mins
Name
Class
Date
1.
Chromosomes 1-22 in a karyotype are also known as ______________.
a)
sex chromosomes
b)
autosomes
c)
barr bodies
d)
trisomy
2.
The following picture is known as a ___________________.
a)
punnett square
b)
pedigree
c)
karyotype
d)
gamete
3.
Downs syndrome may result from
a)
the presence of an extra chromosome
b)
the absence of a single chromosome in a zygote
c)
the mutation of a gene in a zygote
d)
failure of a chromosome to replicate in mitosis
4.
_______________ is a sex linked hereditary disease in which clotting factors are missing from the blood.
a)
PKU
b)
Sickle Cell Anemia
c)
Cystic Fibrosis
d)
hemophillia
5.
The following is a __________________.
a)
a girl with Turner syndrome
b)
a girl with Downs Syndrome
c)
a boy with Turner Syndrome
d)
a boy with Downs Syndrome
6.
In an eukaryotic cell, DNA is primarily located in the ____________.
a)
cytoplasm
b)
nucleus
c)
lysosome
d)
ribosome
7.
Traits controlled by genes on the X-chromosome are called___________.
a)
autosomes
b)
sex-linked
c)
codominant
d)
incomplete dominance
8.
There are ____ as many chromosomes in gametes compared to body cells.
a)
twice
b)
half
c)
one third
d)
thrice
9.
If T= normal and t= Tay Sachs Diseases, then what would be the genotype of individual E?
a)
TT
b)
Tt
c)
tt
d)
TS
10.
Human females produce egg cells that have _____.
a)
one X chromosome and one Y chromosome
b)
only one X chromosome
c)
only one Y chromosome
d)
two Y chromosomes
11.
What percentage of offspring will be male?
a)
50%
b)
25%
c)
75%
d)
100%
12.
How many chromosomes are in a normal human karyotype?
a)
23
b)
46
c)
47
d)
12
13.
How many X chromosomes do normal human males have?
a)
1
b)
2
c)
0
d)
3
14.
Where do barr bodies form?
a)
On Y chromosomes in males
b)
on the X chromosome in males
c)
on one of the X chromosomes in females
d)
on one of the autosomes
15.
A man with type A blood and woman with type B blood have kids, what are the possible blood type?
a)
A, AB, B, 0
b)
type A or type O
c)
Type AB only
d)
type B only
16.
What does a circle represent in a pedigree?
a)
girl
b)
boy
c)
parents
d)
children
17.
What does a square represent in a pedigree chart?
a)
girl
b)
boy
c)
parents
d)
children
18.
What do horizontal lines represent in a pedigree?
a)
boys
b)
girls
c)
connect male and female parents
d)
connect parents to offspring
19.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
4
d)
5
20.
Which of the following is a disorder caused by a dominant allele?
a)
Klinefelters Syndrome
b)
PKU
c)
Huntington's Disease
d)
Cystic Fibrosis
21.
The failure of chromosomes to separate during meiosis is called?
a)
sticky ends
b)
frame shift
c)
duplication
d)
nondisjunction
22.
No baby has ever been born without a/an _______.
a)
an x-chromosome
b)
a Y-chromosome
c)
24th- autosomal pair
d)
25th autosomal pair
23.
What is used to cut DNA into segments?
a)
DNA polymerase
b)
scissors
c)
restriction enzymes
d)
amylase
24.
In gel electrophoresis, which fragments stay closest to the wells?
a)
the biggest fragments
b)
the bluest fragments
c)
the smallest fragments
d)
bananas
25.
Scientists studying the human genome used _____ to find genes.
a)
promoters
b)
open reading frames
c)
sex chromosomes
d)
ECOR1
26.
Why is it important for scientists to compare many genomes to each other?
a)
to determine that we are all identical
b)
so they can find how the human genome varies
c)
to see who is most genetically superior
d)
to find out how humanity is going to end
27.
Which law protects companies from discriminating against you based on your DNA?
a)
Geneva Convention
b)
Genetic Information Nondiscrimination Act
c)
NAFTA
d)
TPP
28.
A boy who is colorblind inherited the disorder from his ______.
a)
mom
b)
sister
c)
dad
d)
grandmother
29.
What is a genetic disorder where a girl receives only one copy of the X chromosome?
a)
Klinefelter's syndrome
b)
Turner's Syndrome
c)
Fragile X
d)
Huntington's Disease
30.
Down Syndrome is caused by
a)
mitotic cell division in the brain
b)
multiple alleles in genes
c)
development of an unfertilized egg
d)
nondisjunction during meiosis
31.
What do horizontal lines represent in a pedigree?
a)
boys
b)
girls
c)
connect male and female parents
d)
connect parents to offspring
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