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Science Benchmark 2 Review
Test Description: Use these games to review for your benchmark.
Instructions: Answer all questions to get your test result.
1) A bacterial cell divides in half to make another organism. This is a type of
A
asexual reproduction
B
egg and sperm joining
C
an allele combination
D
sexual reproduction
2) Most of the life of any cell is spent in a period of growth called
A
telophase
B
anaphase
C
interphase
D
prophase
3) The chromosomes in the nucleus of a cell contain a genetic code known as
A
DNA
B
the key code
C
mitosis
D
meiosis
4) Which of the following bases does not belong in DNA
A
cytosine
B
thymine
C
uracil
D
adenine
5) During _____, the nuclear membrane breaks down into pieces the chromosomes are visible.
A
meiosis
B
regeneration
C
prophase
D
sexual reproduction
6) A punnett square shows you all the ways in which ____ can combine.
A
alleles
B
eggs
C
sperm
D
color
7) Mendel called plants that received different alleles for a trait from each parent ___.
A
phenotypes
B
hybrids
C
dominant
D
purebred
8) In a punnett square, a capital letter stands for a ___ allele.
A
dominant
B
heterozygous
C
recessive
D
homozygous
9) Of the following, which represents a homozygous recessive genotype?
A
tt
B
TT
C
tTt
D
Tt
10) In DNA base pairing, adenine is to _____, as guanine is to _____.
A
guanine, thymine
B
cytosine, thymine
C
thymine, cytosine
D
guanine, adenine
11) A heterozygous parent is crossed with a homozygous recessive parent. What is the probability that the offspring will be homozygous recessive?
A
100%
B
25%
C
75%
D
50%
12) The Father of Genetics
A
Anton Van Leewenhoek
B
Robert Hooke
C
Schwann
D
Gregor Mendel
13) What is the allele combination for the female gender?
A
XX
B
XY
C
AA
D
Aa
14) What is the allele combination for the male gender?
A
XY
B
AA
C
Aa
D
XX
15) What is the genotype of a person with homozygous brown eyes? Hint: Brown is dominant!!!
A
Brown carrying a blue allele
B
bb
C
BB
D
Bb
16) Organisms with two different alleles for a trait
A
heterozygous
B
genotype
C
homozygous
D
phenotype
17) Physical appearance of an organism
A
genotype
B
homozygous
C
heterozygous
D
phenotype
18) Organisms with two identical alleles for a trait
A
genotype
B
homozygous
C
heterozygous
D
phenotype
19) Genetic makeup of an organism
A
phenotype
B
homozygous
C
genotype
D
heterozygous
20) A tool that shows the probability for a trait in the offspring
A
dominant allele
B
Punnett Square
C
recessive allele
D
allele
*select an answer for all questions
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