Meiosis and Punnett Squares UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What sex will a child be if the mother contributes the X chromosome? - CORRECT
ANSWER - It could be either male or female.
In a plant that has red flowers, red flower color, R, is completely dominant to white flower color,
r. If the plant is heterozygous for the flower color, which alleles will be carried by the gametes it
produces? - CORRECT ANSWER - R and r
(hetero- different)
A student did an experiment to determine the genetic ratios between a tall pea plant (Dd) and a
dwarf pea plant (dd). What phenotypic ratio is expected from the cross between the plants? -
CORRECT ANSWER - 2 tall pea plants (Dd)
2 dwarf pea plans (dd)
In snapdragons, the combined expression of both alleles for flowers color produces a new
phenotype that is pink. this illustrates incomplete dominance. The Punnett square above shows
that both the white and red snap dragons are homozygous. What is the product from a cross
between 2 heterozygous pink snapdragons? - CORRECT ANSWER -
Timothy has attached earlobes like his maternal grandfather. His mother and father both have
free earlobes, which are dominant. Which statement best explains how Timothy inherited
attached earlobes? - CORRECT ANSWER - He received a recessive allele from each
parent.
In pea plants, Mendel found that tall plants and yellow seeds are both dominant. The phenotype
for a pea plant with the phenotype TtYy would be - CORRECT ANSWER - Tall with
yellow seeds
ACTUAL Exam Questions and CORRECT
Answers
What sex will a child be if the mother contributes the X chromosome? - CORRECT
ANSWER - It could be either male or female.
In a plant that has red flowers, red flower color, R, is completely dominant to white flower color,
r. If the plant is heterozygous for the flower color, which alleles will be carried by the gametes it
produces? - CORRECT ANSWER - R and r
(hetero- different)
A student did an experiment to determine the genetic ratios between a tall pea plant (Dd) and a
dwarf pea plant (dd). What phenotypic ratio is expected from the cross between the plants? -
CORRECT ANSWER - 2 tall pea plants (Dd)
2 dwarf pea plans (dd)
In snapdragons, the combined expression of both alleles for flowers color produces a new
phenotype that is pink. this illustrates incomplete dominance. The Punnett square above shows
that both the white and red snap dragons are homozygous. What is the product from a cross
between 2 heterozygous pink snapdragons? - CORRECT ANSWER -
Timothy has attached earlobes like his maternal grandfather. His mother and father both have
free earlobes, which are dominant. Which statement best explains how Timothy inherited
attached earlobes? - CORRECT ANSWER - He received a recessive allele from each
parent.
In pea plants, Mendel found that tall plants and yellow seeds are both dominant. The phenotype
for a pea plant with the phenotype TtYy would be - CORRECT ANSWER - Tall with
yellow seeds
