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WorksheetsHeredity
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What do these two organisms have in common?
a)
They reproduce sexually
b)
They reproduce asexually
c)
They reproducing using eggs and sperm
d)
They reproduce with two parents
2.
Which statement describes asexual and sexual reproduction?
a)
Asexual is one part of sexual reproduction.
b)
Sexual reproduction happens before asexual reproduction.
c)
Asexual needs one parent, and sexual needs two parents.
d)
Sexual only happens in animals, and asexual happens only in plants.
3.
What is an advantage of sexual reproduction over asexual reproduction?
a)
Sexual reproduction produces identical offspring.
b)
Sexual reproduction happens before asexual reproduction.
c)
Sexual reproduction generates a large number of offspring.
d)
Sexual reproduction causes genetic variation in offspring.
4.
Which organism is the product of asexual reproduction?
a)
W
b)
X
c)
Y
d)
Z
5.
This shows which form of reproduction?
a)
sexual
b)
asexual
6.
A mutation in which cell would get passed on to offspring?
a)
blood
b)
egg
c)
muscle
d)
nerve
7.
Mr. Robinson's hairline is straight, and Mrs. Robinson has a widow's peak. Which sentence best explains why their son has a straight hairline?
a)
He brushes his hair the same way his father brushes his hair.
b)
He cuts his hair the same way his mother cuts her hair.
c)
He inherited his hairline from his parents.
d)
His hairline straightened as he grew older.
8.
Genes are unable to determine a person's
a)
eye color
b)
athletic ability
c)
shape of ears
d)
type of chin
9.
The pictures below show two dogs. The instructions determining the color of their fur are found in their cell...
a)
cytoplasm
b)
membrane
c)
mitochondria
d)
chromosomes
10.
A father's genotype is BB, and a mother's is Bb. Which statement describes their offspring?
a)
They will have the same genotype and phenotype.
b)
The phenotypes will be the same, but the genotypes will be different.
c)
The genotypes will be the same, but the phenotypes will be different.
d)
Both genotypes and phenotypes will be different
11.
White hair (W) is dominant in horses, and non-white (w) is recessive. A dominant WW horse is crossed with a recessive ww horse, as shown in the Punnett square. What percentage of offspring would have white hair?
a)
0%
b)
50%
c)
75%
d)
100%
12.
Round seeds (R) are dominant to wrinkled seeds (r) in pea plants. If two heterozygous parents are crossed as shown above, what percentage of offspring would have round seeds?
a)
0%
b)
50%
c)
75%
d)
100%
13.
A partial Punnett square is shown below. Which of the following statements describes the parental genotypes that would result in this Punnett square?
a)
Both parents are heterozygous.
b)
One parents is homozygous dominant, the other is heterozygous.
c)
One parents is homozygous recessive, the other is heterozygous.
d)
Both parents are homozygous dominant.
14.
Hanging earlobes (L) are dominant to attached earlobes (l). Based on the diagram, which box would have attached earlobes?
a)
1
b)
2
c)
3
d)
4
15.
In mussels, brown coloring (B) is dominant and blue coloring (b) is recessive. Which cross would have 100% of offspring with blue color?
a)
Bb x Bb
b)
BB x bb
c)
bb x bb
d)
BB x BB
16.
According to the theory of natural selection, how did giraffe necks get longer over time?
a)
Short-necked giraffes were killed by long-necked giraffes.
b)
Giraffes stretched to make their necks longer.
c)
Long-necked giraffes could reach more food and survived longer to reproduce.
d)
Long-necked giraffes only mated with long-necked giraffes.
17.
The pedigree shows the inheritance of sickle cell anemia. Which couple has the greatest chance of having a child that is affected?
a)
1
b)
2
c)
3
d)
4
18.
The pedigree shows colorblindness. How many individuals in the pedigree are affected by colorblindness?
a)
3
b)
4
c)
7
d)
12
19.
Peppered moths come in light and dark colors. Light moths are more common, since they blend in with the light bark of the trees they live on. If pollution darkens the color of the bark, what does natural selection predict will happen to the moths?
a)
Their color will remain light gray
b)
Their color will turn dark gray
c)
Their wings will get shorter
d)
Their wings will get longer
20.
Which of these is a trait that is acquired through learning?
a)
Ability to flinch
b)
Ability to be right-handed
c)
Ability to throw a free throw
d)
Ability to grasp objects
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