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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
an allele combination
B
asexual reproduction
C
egg and sperm joining
D
sexual reproduction
2) Most of the life of any cell is spent in a period of growth called
A
anaphase
B
prophase
C
interphase
D
telophase
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
adenine
B
thymine
C
uracil
D
cytosine
5) During _____, the nuclear membrane breaks down into pieces the chromosomes are visible.
A
prophase
B
regeneration
C
sexual reproduction
D
meiosis
6) A punnett square shows you all the ways in which ____ can combine.
A
eggs
B
color
C
alleles
D
sperm
7) Mendel called plants that received different alleles for a trait from each parent ___.
A
purebred
B
dominant
C
phenotypes
D
hybrids
8) In a punnett square, a capital letter stands for a ___ allele.
A
heterozygous
B
homozygous
C
recessive
D
dominant
9) Of the following, which represents a homozygous recessive genotype?
A
tt
B
TT
C
Tt
D
tTt
10) In DNA base pairing, adenine is to _____, as guanine is to _____.
A
guanine, thymine
B
guanine, adenine
C
thymine, cytosine
D
cytosine, thymine
11) A heterozygous parent is crossed with a homozygous recessive parent. What is the probability that the offspring will be homozygous recessive?
A
50%
B
100%
C
25%
D
75%
12) The Father of Genetics
A
Gregor Mendel
B
Schwann
C
Anton Van Leewenhoek
D
Robert Hooke
13) What is the allele combination for the female gender?
A
XX
B
Aa
C
AA
D
XY
14) What is the allele combination for the male gender?
A
Aa
B
XX
C
XY
D
AA
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
homozygous
C
genotype
D
phenotype
17) Physical appearance of an organism
A
homozygous
B
genotype
C
phenotype
D
heterozygous
18) Organisms with two identical alleles for a trait
A
genotype
B
homozygous
C
heterozygous
D
phenotype
19) Genetic makeup of an organism
A
heterozygous
B
phenotype
C
homozygous
D
genotype
20) A tool that shows the probability for a trait in the offspring
A
recessive allele
B
dominant allele
C
Punnett Square
D
allele
*select an answer for all questions
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