
Heredity Unit Test Review
Authored by Rachel Neckermann
Science
10th - 11th Grade
NGSS covered
Used 226+ times

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42 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?
25% purple, 75% white.
75% purple, 25% white
100% purple
50% purple, 50% white
Tags
NGSS.HS-LS3-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What law BEST explains why an organism with ‘Ttʼ will show only the dominant phenotype?
Law of Dominance
Law of independent assortment
Law of segregation
Chromosome theory of inheritance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an organism inherits one dominant allele and one recessive allele for eye color, their genotype would be:
heterozygous
homozygous
homologous
haploid
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that any of their children will inherit the disorder?
50%
25%
75%
100%
Tags
NGSS.HS-LS3-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to each of their offspring?
Chromosome Theory of Inheritance
Law of Segregation
Law of independent assortment
Law of dominance
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What must be the genotypes of the
parents to create this phenotypic ratio?
Rr x Rr
Rr x rr
RR x Rr
RR x rr
Tags
NGSS.HS-LS3-2
NGSS.HS-LS3-1
NGSS.HS-LS3-3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Imagine two heterozygous parents. Each has a dominant allele (B) for brown eyes and a recessive allele (b) for blue eyes. What would the genotypic ratio of the offspring be?
50% BB, 50% Bb
25% BB, 50% Bb, 25% bb
50% Bb, 50% bb
100% Bb
Tags
NGSS.HS-LS3-3
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