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WorksheetsHeredity Final 8th Grade Colorado
Total questions: 50
Worksheet time: 48mins
Name
Class
Date
1.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
c)
dominant inheritance
d)
recessive inheritance
2.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
3.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
4.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
5.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
6.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
7.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
8.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
9.
Aa is
a)
homozygous
b)
heterozygous
10.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
11.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
12.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
13.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
14.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
15.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
16.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
17.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
18.
How many boys did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
19.
How many girls did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
20.
In the second generation-how many people display the physical trait?
a)
2
b)
4
c)
5
d)
6
21.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
22.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
23.
Looking at this pedigree, how many family members have the disease?
a)
4
b)
7
c)
All
d)
None
24.
What do half colored symbols represent?
a)
The individual is a carrier.
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
25.
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
26.
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
27.
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
28.
What does a double line mean?
a)
double mint gum
b)
twins
c)
double relation
d)
double trouble
29.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
30.
a)
Anaphase
b)
Cytokinesis
c)
Telophase
d)
Metaphase
31.
a)
Cytokinesis
b)
Interphase
c)
Anaphase
d)
Metaphase
32.
a)
Anaphase
b)
Cytonkinesis
c)
Interphase
d)
Prophase
33.
a)
Cytokinesis
b)
Anaphase
c)
Telophase
d)
Prophase
34.
Which is Metaphase?
a)
A
b)
E
c)
C
d)
F
35.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
36.
The time between cell divisions in the life cycle of the cell is called
a)
anaphase
b)
interphase
c)
prophase
d)
metaphase
37.
Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have -
a)
16 chromosomes.
b)
46 chromosomes.
c)
8 chromosomes.
d)
4 chromosomes.
38.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
39.
Identify the phase.
a)
Telophase I
b)
Telophase II
c)
Metaphase I
d)
Metaphase II
40.
Identify the phase:
a)
Metaphase I
b)
Metaphase II
c)
Anaphase I
d)
Anaphase II
41.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
42.
True or False? The passing of traits from one parent to offspring is heredity.
a)
False
b)
True
43.
What is this image showing?
a)
DNA
b)
Chromosome
c)
Alleles
d)
Phenotype
44.
B=Blonde Hair b=Brown Hair
If a person was BB they would have
If a person was BB they would have
a)
Blonde Hair
b)
Brown Hair
45.
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
46.
Purebred is another word for __________, while hybrid is another word for __________.
a)
dominant; recessive
b)
recessive; dominant
c)
homozygous; heterozygous
d)
heterozygous; homozygous
47.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
48.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
49.
A roan cow shows co-dominance in fur color (orange and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?
a)
4: Orange and White
b)
1: Orange : 1 White
c)
2 Orange: 2 Orange and White: 0 White
d)
1: Orange: 2 Orange and White: 1 White
50.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
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