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Science Benchmark 2 Review II
Test Description: Use these games to review for your benchmark.
Instructions: Answer all questions to get your test result.
1) The allele that seems to disappear
A
Punnett Square
B
recessive allele
C
dominant allele
D
allele
2) The different forms a gene has for a trait
A
dominant allele
B
Punnett Square
C
recessive allele
D
allele
3) The allele that covers up another allele
A
dominant allele
B
allele
C
recessive allele
D
Punnett Square
4) If the egg cell of a cat has 18 chromosomes, how many chromosomes will there be in the zygote after fertilization?
A
18
B
9
C
36
D
3
5) Mitosis is to _____; as Meiosis is to ______.
A
sperm cells ; egg cells
B
body cells ; sex cells
C
sex cells ; body cells
D
half cells ; full cells
6) Mitosis is to _____; as Meiosis is to ______.
A
sperm ; egg
B
egg ; sperm
C
haploid cells; diploid cells
D
diploid cells ; haploid cells
7) Erik wants to determine what type of reproduction a particular organism undergoes. He finds out that all of the organism’s offspring look identical to the original organism. He determines that this organism reproduces ___.
A
rarely
B
asexually
C
sexually
D
often
8) Asexual reproduction results in new bacteria whose DNA is ____.
A
none of the above
B
half- identical to both parents
C
different from the parent
D
identical to that of the parent
9) Haploid numbers of chromosomes are usually found in the _____ of an organism.
A
zygotes
B
body cell
C
sex cells
D
tissues
10) Each human body cell has ______ total chromosomes.
A
18
B
13
C
23
D
46
11) Watson and ________ made the first accurate model of DNA in 1953.
A
Crick
B
Best
C
Burstein
D
Cricket
12) In a segment of DNA there are 28 bases of adenine. How many bases of thymine would there be in the same DNA model?
A
28
B
92
C
65
D
14
13) Sex cells from female reproductive organs.
A
sperm
B
zygote
C
egg
D
meiosis
14) Sex cells from the male reproductive organ.
A
zygote
B
sperm
C
meiosis
D
egg
15) The first cell that is formed when the sperm and egg unite during fertilization.
A
sperm
B
meiosis
C
zygote
D
egg
*select an answer for all questions
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