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Genetics Chapter 5
Test Description: 7th grade
Instructions: Answer all questions to get your test result.
1) In a human body cell there are 46 chromosomes. How many chromosomes are in a sperm??
A
random number
B
92
C
46
D
23
2) If the genotype is Bb and B= brown eyes and b= blue eyes, what is the phenotype?
A
blue eyes
B
green eyes
C
brown eyes
D
homozygous
3) Which is an example of a homozygous recessive genotype?
A
Rr
B
RR
C
rr
D
RrRr
4) Which sex chromosomes do male have?
A
XX
B
recessive
C
XY
D
dominate
5) Which of the following is the smallest pieces that makes up the other terms?
A
cells
B
chromosomes
C
genes
D
nucleus
6) If you cross two rabbits that have the genotype Bb, how many possible genotypes are there?
A
1
B
2
C
3
D
4
7) If you cross two rabbits with the genotype Bb, What is the percent chance that they will we homozygous recessive?
A
75%
B
25%
C
50%
D
100%
8) What is the study of inheritance?
A
dominance
B
genetics
C
cytology
D
ecology
9) Who is considered the father of genetics and studied pea plant charateristics?
A
Robert Hooke
B
Gregor Mendel
C
Mr. Meyer
D
Charles Darwin
10) Which is an example of a heterozyous genotype?
A
hh
B
brown hair
C
HH
D
Hh
*select an answer for all questions
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