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WorksheetsGenetics
Total questions: 40
Worksheet time: 34mins
Name
Class
Date
1.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
2.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
3.
Squidward has light blue skin, and his genotype for this trait is Bb. Which of the following would describe Squidward?
a)
Purebred
b)
Hybrid
c)
Homozygous
d)
Sex-linked
4.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
5.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
6.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
7.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
8.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
9.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
10.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
11.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
12.
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
13.
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
14.
What is the relationship between DNA and chromosomes?
a)
Chromosomes are made of DNA
b)
DNA is made of chromosomes
c)
DNA and chromosomes are the same thing.
d)
All of the above are correct
15.
Put in order smallest to largest:
a)
Chromosome - DNA - Gene
b)
Gene - DNA - Chromosome
c)
DNA - Gene Chromosome
d)
Chromosome - Gene - DNA
16.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
17.
Term for an organism that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
18.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
19.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
20.
Which of the following is an inheritable genetic trait?
a)
language
b)
type of music you like
c)
eye color
d)
slow growth due to insufficient nutrition.
21.
Which is true about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
22.
What percentage of chromosomes are contributed by a sperm cell?
a)
75%
b)
25%
c)
50%
d)
100%
23.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2
24.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Happens very quickly
d)
Offspring are exact copies of parent
25.
Which is a type of Asexual Reproduction
a)
Flowers being pollinated
b)
Binary fission
c)
Chickens laying fertilized eggs
d)
Conjugation
26.
What types of cells are found only in organisms that reproduce sexually?
a)
blood cells
b)
neurons
c)
skin cells
d)
gametes
27.
Before a cell can divide, what must happen?
a)
Nothing, it is always ready to divide
b)
The number of chromosomes must be reduced by half
c)
The chromosomes must replicate
d)
The number of chromosomes must triple.
28.
After meiosis, the haploid number of chromosomes in a human sex cell is:
a)
46
b)
92
c)
22
d)
23
29.
What is the diploid number of cells found in a human body cell?
a)
23
b)
46
c)
92
d)
47
30.
Meiosis creates how many cells?
a)
1
b)
2
c)
3
d)
4
31.
At the end of mitosis, how many identical cells will you have?
a)
1
b)
2
c)
3
d)
4
32.
After meiosis is complete, the new cells:
a)
are all identical
b)
are all different
c)
are half identical and half different
d)
are all stretched out
33.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
34.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
35.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
36.
What does a filled in square represent?
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
37.
What does a horizontal line between a square and a circle mean?
a)
They are siblings
b)
They are cousins
c)
They are married ("together")
d)
They are the children
38.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
39.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
40.
How are individuals III-2 and II-4 related?
a)
Brother and sister
b)
Dad and daughter
c)
Uncle and niece
d)
Grandfather and granddaughter
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