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Worksheetsgenetics, Punnett square
Total questions: 20
Worksheet time: 13mins
If having dimples (d) is recessive, and having no dimples (D) is dominant, what are the genotype(s) of individuals who do have dimples?
DD
Dd
dd
4 O'clock flowers are incomplete dominance because
heterozygous alleles show a blended phenotype
homozygous alleles are pink
heterozygous alleles are red
Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?
100%
75%
50%
25%
0%
B = brown fur b = white fur
In the punnett square, what is the probability of the offspring having white fur?
0%
25%
50%
75%
Which of the following allele pairs is heterozygous?
RR
ss
Who is the father of genetics?
Darwin
Mendel
Lamarck
Einstein
What are the possible genotypes for this cross? And what percentage of each is produced?
TT = 25% Tt= 50% tt=25%
all tall
TT= 75% tt = 25%
Tt = 100%
This image is an example of
Polygenic
Codominance
Multiple Alleles
Incomplete Dominance
Blood Type is an example of
Multiple Alleles
Incomplete Dominance
Hemophilia
Pleiotropy
Height is an example of a sex-linked trait.
True
False
Sickle Cell Anemia is a dominant trait.
True
False
The majority of sex-linked traits are
x-linked dominant
x-linked recessive
y-linked dominant
y-linked recessive
Skin color is an example of polygenic inheritance because
M1 and M2 are two different genes that code for the same trait
There are 4 alleles
the environment also affects skin color
Pleiotropy is an example of sickle cell anemia because
one gene affects blood cell shape, the eyes, heart and lungs.
many genes code for the disease.
sickle cell anemia is a recessive trait
A person with type A blood can donate to a person with type B blood because they are codominant.
True
False
This pedigree indicates ____ number of carriers for hemophilia, a sex-linked trait.
5
4
3
0
