WorksheetsGenetics
Total questions: 22
Worksheet time: 17mins
Name
Class
Date
1.
What pattern of inheritance is shown in the pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked
2.
What pattern of inheritance is shown in this pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked
3.
What pattern of inheritance is shown in this pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked
4.
Which type of inheritance is shown in the punnett square?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
5.
What is the percent chance of having a boy that will be bald if B = Normal and b = Bald
a)
25%
b)
50%
c)
100%
d)
0%
6.
What is the percent chance of having a child that will have the balding gene.
a)
0%
b)
25%
c)
50%
d)
100%
7.
Which type of inheritance is shown in the pedigree?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked
8.
The different forms of a gene are called
a)
Traits
b)
Alleles
c)
Pollinations
d)
Hybrid
9.
Organisms that have two identical alleles for a particular trait are said to be
a)
Hybrid
b)
Heterozygous
c)
Homozygous
d)
Dominant
10.
What principle states that, during gamete formation, genes for different traits separate without influencing each other’s inheritance?
a)
Principle of Dominance
b)
Principle of Probabilities
c)
Principle of Independent Assortment
d)
Principle of Segregation
11.
A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an albino offspring (aa). Which of Mendels principles exlain(s) why the offspring is albine?
a)
dominance only
b)
dominance and segregation
c)
independent assortment only
d)
segregation only
12.
In 1866, Gregor Mendel published the results of experiments involving pea plants. In one experiment, Mendel crossed plants that produced smooth, yellow peas with plants that produced green, wrinkled peas. Every pea in the first generation crop from this cross was yellow and smooth.
What conclusion did Mendel draw from this experiment?
What conclusion did Mendel draw from this experiment?
a)
Some inherited traits are dominant while other traits are recessive
b)
Some traits are inherited, but a pea’s appearance is determined by its environment
c)
Pea plants do not inherit traits from either parent
d)
Pea plants inherit traits from only one parent.
13.
A genetic trait that appears in every generation of offspring is called.
a)
dominant
b)
recessive
c)
phenotypic
d)
superior
14.
If an individual possesses two recessive alleles for the same trait, the individual is said to be
a)
homozygous for the trait.
b)
heterozygous for the trait.
c)
haploid for the trait
d)
mutated
15.
A genotype is
a)
physical appearance
b)
made up word for genes
c)
not a genetically related word
d)
two alleles
16.
A phenotype is
a)
Physical appearance
b)
made-up word for gene
c)
Not a word at all
d)
Two alleles
17.
Suppose a white-furred rabbit breeds with a black-furred rabbit and all of their offspring have a phenotype of gray fur. What does the gene for fur color in rabbits appear to be an example of?
a)
codominance
b)
incomplete dominance
c)
dominance
d)
mosaicism
18.
In the ABO blood group system in humans, if a person of type-B blood has children with a person of type-AB blood, what blood types could their children have?
a)
Type-AB, type-A, and type-B
b)
Type-A and type-B
c)
Type-B and type-AB
d)
Type-AB, type-A, type-B, and type-O
19.
A gene for corn has two alleles, one for yellow kernels and one for white kernels. Cross pollination of yellow corn and white corn results in ears of corn that have an approximately even mix of yellow and white kernels. Which term best describes the relationship between the two alleles?
a)
Codominance
b)
Incomplete dominance
c)
Chimarism
d)
Dominance
20.
Suppose that in barley plants, the allele for tall stalks is dominant over short stalks and the allele for wide leaves is dominant over thin leaves. What would be the best way to determine the genotype of a barley plant with a tall stalk and wide leaves?
a)
Perform a testcross with a barley plant that has a short stalk and thin leaves
b)
Perform a testcross with a barley plant that has a tall stalk and wide leaves
c)
Perform a testcross with a known heterozygous barley plant
d)
Perform a testcross with a barley plant that has a tall stalk and thin leaves
21.
In a cross of Bb x Bb, what fraction of the offspring can be expected to express dominant alleles?
a)
3/4
b)
1/4
c)
1/2
d)
4/4
22.
The X-linked recessive trait of color-blindness is present in 5% of males. If a mother who is a carrier and father who is unaffected plan to have children, what is the probability of having a male who is color-blind?
a)
50%
b)
25%
c)
75%
d)
1%
100 %
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