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ADV 7th Benchmark Review 2-b
Test Description: Review game for Life Science Benchmark 2
Instructions: Answer all questions to get your test result.
1) The alleles for tall stems in plants are dominant. Crossing a pruebred tall plant with a purebred short plant would result in
A
all short plants
B
all tall plants
C
all medium height plants
D
half short and half tall plants
2) In a cross between an AA organism and an Aa organism, which statement is true?
A
Both parents are heterozygous for the trait
B
One parent is homozygous and one parent is heterozygous
C
Both parents are homozygous for the trait
D
The trait is codominant
3) In a cross between two heterozygous organisms, what percentage of the offspring are likely to be homozygous?
A
25%
B
50%
C
0%
D
75%
4) In a cross between two heterozygous organisms, what fraction of the offspring will show the dominant trait?
A
3/4
B
4/4
C
1/4
D
2/4
5) Scientists call an organism that has two different alleles for a trait
A
probability
B
a hybrid
C
homologous
D
homozygous
6) Traits are controlled by
A
homologies
B
analogies
C
genes
D
purebreds
7) ____________ are the different forms of a gene
A
genotypes
B
alleles
C
chromosomes
D
phenotypes
8) Traits are passed on from parents to offspring in a process called _____
A
genetics
B
heredity
C
mitosis
D
mutation
9) In a genetic cross, the allele that each parent will pass on to its offspring is based on _____.
A
punnet squares
B
transfer RNA
C
probability
D
fertilization
10) ____________ are carried from parents to offspring on chromosomes.
A
Phenotypes
B
Purebreds
C
Hybrids
D
Genes
*select an answer for all questions
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