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WorksheetsMendelian Genetics Practice: Mendel's Laws & Two-Factor Crosses
Total questions: 25
Worksheet time: 1hrs 2mins
What genotype is missing from this Punnett Square?
RrYy
RRYY
rryy
RrYY
Based off this Punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
9/16
3/16
1/16
16/16
A male beetle has the genotype Aarr. If this beetle mates with a female with genotype AARr, what is the chance their offspring will have the genotype AaRr?
3/16
4/16 (which reduces to 1/4)
8/16 (which reduces to 1/2)
12/16 (which reduces to 3/4)
Aa, DD, Bb, yy are all examples of
genotypes
phenotypes
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.
This cross would be best represented by which genotypes?
BBEE x bbee
BBEe x BbEe
BbEE x BbEe
BBee x BBEE
What goes in box 3?
Aabb
AABB
AAbb
aaBb
Which of the following identifies the phenotypes?
A
B
C
D
Which of the following identifies the gametes?
A
B
C
D
What is the genotype for a pea plant homozygous for round seeds (R), and heterozygous for yellow seeds?
RrYy
RRyy
RRYy
rryy
Select BOTH of the following option(s) that is/are considered to be homozygous.
BB
Bb
bb
What does it mean for a trait to be considered "dominant"
The dominant trait is expressed with just one allele present
The dominant trait is expressed only when two alleles are present
A dominant trait is when the both alleles are the same
A dominant trait is when the both alleles are different
Select all of the following options that represent a genotype.
Rr
Round peas
Smooth peas
rr
Select all of the following options that represent a phenotype.
Rr
Round peas
Smooth peas
rr
Which of these terms is associated with gametes? (Select all that apply.)
Haploid
Diploid
Egg cell
Skin cell
Sperm cell
In a cross of purple flowered heterozygous plants (Pp), the letter P represents the allele for purple flowers and the letter p represents the allele for white flowers. What is the probability that an offspring of this cross expresses plants with purple flower phenotypes?
0
1/4
1/2
3/4
If your genotype is Bb, then you can only pass a B or b to your child but you can't pass both. Which of Mendel's laws does this correspond to?
Law of Dominance
Law of Segregation
Law of Independent Assortment
An organism is a hybrid genotype (Tt) but is appears tall instead of short. This corresponds to which of Mendel's laws?
Law of Dominance
Law of Segregation
Law of Independent Assortment
Which of Mendel's laws states that alleles are distributed to gametes independent of one another?
Law of Dominance
Law of Segregation
Law of Independent Assortment
The Law of Segregation applies to mitosis but not meiosis.
True
False
Which of Mendel's Laws says that every individual has two alleles of each gene and when gametes are produced, each gamete receives one of these alleles?
Law of Segregation
Law of Independent Assortment
Law of Dominance
Genetics Law
An organism is ______ for a trait if its two alleles for the trait differ from each other
heterozygous
homozygous
hybrid
dominant
