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