Indiana Science Grade 8

Chapter 16: The Role of Genes in Inheritance

Section 2 Self-Check Quiz-Eng.

1.
Which one of the following is an example of heredity?
A)A kitten has black fur like its mother.
B)Two students in a class have red hair.
C)Honeybees collect nectar from flowers.
D)A bird builds a nest of grass and mud.
2.
The study of which traits are passed from parent to offspring is called __________.
A)genetics
B)heredity
C)sexual reproduction
D)cloning
3.
What is a small section of DNA that has information about a trait called?
A)a gene
B)a chromosome
C)a molecule
D)a sex cell
4.
In a corn plant, a pair of chromosomes is found to have one allele for purple seeds and one for yellow seeds. The trait of seed color in this plant would be called __________.
A)pure
B)dominant
C)recessive
D)a hybrid
5.
If a rabbit with one brown-fur allele and one white-fur allele has brown fur, which allele would you suspect was dominant?
A)the white-fur allele
B)neither allele
C)both alleles
D)the brown-fur allele
6.
How many copies of a gene must an individual have to show a recessive trait?
A)two
B)one
C)three
D)four
7.
Sperm and egg each contain __________.
A)two alleles for each trait
B)23 alleles for each trait
C)only dominant alleles
D)one allele for each trait
8.
Which sperm will fertilize the egg during sexual reproduction?
A)The sperm with the most dominant alleles.
B)It is a matter of chance.
C)The sperm that has extra chromosomes.
D)The sperm that has hybrid traits.
9.
Whether a goldfish inherits a large or small tail depends upon which genes are carried in __________.
A)its parents' sex cells
B)its parents' body cells
C)its parents' tail cells
D)its own sex cells
10.
Blood type in humans is an example of __________ controlling a trait.
A)multiple genes
B)multiple alleles
C)one allele
D)mutations
11.
Changes in genes or chromosomes are called __________.
A)alleles
B)multiple alleles
C)heredity
D)mutations
12.
Why is selective breeding used with dairy cattle, race horses, and many other animals?
A)to continue desired traits
B)to produce mutations
C)to reduce sexual reproduction
D)to increase variations
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