WorksheetsMendel, Mutations, Meiosis
Total questions: 37
Worksheet time: 56mins
Name
Class
Date
1.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
2.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
3.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
4.
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
5.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
6.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
7.
In this punnett square, what is the missing genotype?
a)
AA
b)
AO
c)
AB
d)
BB
8.
R=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
a)
offspring will be Rr
b)
offspring will be RR
c)
round seeds will be recessive to wrinkled
d)
Wrinkled will be observed in half of offspring
9.
How many pairs of chromosomes are in your cells?
a)
23
b)
19
c)
12
d)
10
10.
Which of the following alleles is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
11.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
12.
Which of the following alleles is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
13.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
14.
What is the genotype for a male human (boy)?
a)
XX
b)
XY
15.
What is the genotype for a female human (girl)?
a)
XX
b)
XY
16.
What characteristic would a child not inherit from parents?
a)
freckles
b)
eye color
c)
hair style
d)
dimples
17.
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
18.
GgTt x GgTt
What would the phenotypic ratio be for the cross above?
What would the phenotypic ratio be for the cross above?
a)
8 : 8
b)
9: 3 : 3 : 1
c)
4 : 4 : 4: 4
d)
1 : 2 : 1
19.
A horse with a palomino coat color is an example of
a)
complete dominance
b)
codominance
c)
incomplete dominance
d)
complete recessive
20.
Which genotype represents a true-breed?
a)
BB
b)
Bb
c)
BbGG
d)
BBGg
21.
Meiosis is a type of cell division that produces
a)
chromosomes
b)
DNA
c)
zygotes
d)
gametes
22.
Meiosis results in ____
a)
2 haploid cells
b)
4 haploid cells
c)
2 diploid cells
d)
4 diploid cells
23.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
24.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
25.
What will pair with Guanine?
a)
Guanine
b)
Cytosine
c)
Adenine
d)
Thymine
26.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
27.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
28.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
29.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
30.
If a man does not have hemophilia (X linked trait), what percentage of his daughters will have hemophilia?
a)
100%
b)
75%
c)
50%
d)
0%
31.
What percentage of human egg cells carries an X chromosome?
a)
0%
b)
25%
c)
50%
d)
100%
32.
Error in meiosis in which homologous chromosomes fail to separate
a)
nondisjunction
b)
sex-linked recessive
c)
autosomal dominant
d)
autosomal recessive
33.
How many chromosomes are shown in a normal human karyotype?
a)
2
b)
12
c)
25
d)
46
34.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
35.
Which of the following combinations of sex chromosomes represents a male?
a)
XY
b)
XYY
c)
XX
36.
Chromosomes that do not control the sex of the offspring are called
a)
sex chromosomes
b)
somatic chromosomes
c)
autosomal chromosomal
37.
What do you call the non-Mendelian inheritance pattern that states that neither trait is dominant and the traits appear to blend together?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
100 %
