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WorksheetsPunnett and Pedigree Quiz
Total questions: 14
Worksheet time: 10mins
Name
Class
Date
1.
Of sixteen rabbits just born, thirteen have brown fur and three have white fur. The trait for white fur is considered to be
a)
recessive
b)
bossy
c)
stronger
d)
dominant
2.
Which term correctly describes an individual with a pair of the same alleles for a trait?
a)
homologus
b)
heterologus
c)
homozygous
d)
heterozygous
3.
Look at the Punnett square.
If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?
If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?
a)
Two of the offspring will definitely have the genotype Aa.
b)
It is more likely that two of them will have the genotype Aa than the genotype aa.
c)
There is a 50% chance for each of the four offspring to have the genotype Aa.
d)
It is less likely that two of them will have the genotype Aa than the genotype aa.
4.
An individual with two different alleles for a specific trait is said to be:
a)
homozygous
b)
heterozygous
c)
homogeneous
d)
heterogeneous
5.
Phenotype refers to the _________ of an individual
a)
genetic makeup
b)
actual physical appearance
c)
recessive alleles
d)
dominant alleles
6.
When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ______________ allele.
a)
dominant
b)
recessive
c)
both
d)
neither
7.
Gregor Mendel developed some basic principles of heredity by
a)
crossing pea plants
b)
breeding fruit flies
c)
cutting off the tails of mice
d)
growing bacteria in a laboratory
8.
An organism that has two identical genes for a trait is said to be
a)
heterozygous for the trait
b)
hybrid for the trait
c)
homozygous for the trait
d)
incompletely dominant for the trait
9.
Heredity information for traits is located in
a)
genes found on chromosomes
b)
chromosomes found on genes
c)
the mitochondria
d)
the lysosomes in the cytoplasm
10.
Which of these would best be described as a phenotype?
a)
Bb
b)
Pp
c)
Brown hair
d)
Mutation
11.
One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a white color.
a)
100%
b)
25%
c)
75%
d)
50%
12.
One cat carries homozygous, long-haired traits (SS), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.
a)
100%
b)
25%
c)
75%
d)
50%
13.
How many males are shown in this pedigree?
a)
8
b)
5
c)
2
d)
16
14.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
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