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Chapter 3 Test
Test Description: Heredity and Genetics
Instructions: Answer all questions to get your test result.
1) A gene combination in which a mixture of traits shows is called
A
codominance
B
heredity
C
energy
D
matter
2) Traits that are inherited with sex chromosomes are
A
uncontrolled traits
B
controlled traits
C
mutation traits
D
sex-linked traits
3) A change in a gene is a
A
gene
B
trait
C
environment
D
mutation
4) Characteristics of an organism are called
A
DNA
B
traits
C
chemicals
D
chromosomes
5) An organism with two like genes for a trait is said to be (2 capital letters or 2 lower case letters)
A
strong
B
homozygous
C
heterozygous
D
blue eyed
6) A human body cell contains how many chromosomes?
A
40
B
10
C
46
D
23
7) How many chromosomes does a human egg or sperm carry?
A
13
B
23
C
20
D
46
8) Color blindness is
A
Heart disease
B
When extra oxygen gets into the body
C
Energy on the DNA strand
D
A sex linked disorder
9) A dominant gene usually shows itself over a
A
inherited trait
B
sex-linked trait
C
recessive gene
D
environmental factor
10) The process by which plants with desirable traits are crossed until a new variety of plant is developed is called
A
recessive traits
B
meiosis
C
mutations
D
mass selection
11) An organism receives chromosomes from
A
the atmosphere
B
its parents
C
mutations
D
the environment
12) The passing of traits from parents to offspring is called
A
DNA
B
chromosomes
C
heredity
D
environmental factors
13) In a strand of DNA Adenine (A) goes with Thymine (T) and Cytosine (C) goes with
A
cytoplasm
B
cells
C
RNA
D
guanine (G)
14) The field of biology that studies heredity is
A
reproduction
B
cell division
C
duplication
D
genetics
15) A pea plant with two tall genes is said to be
A
heterozygous tall
B
recessive
C
homozygous tall
D
karotype
16) A Punnett square shows combinations of genes and the possible outcomes show possible
A
traits the organism might have
B
hybrids the organism might have
C
DNA the organism might have
D
chromosomes the organism might have
17) A type of cell division that produces gametes is
A
codominance
B
meiosis
C
replication
D
heredity
18) A male gamete contains
A
two Y chromosomes (YY)
B
one X and one Y chromosome (XY)
C
two X chromosomes (XX)
D
one chromosome
*select an answer for all questions
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