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