Biology Questions With All Correct Answers
Mendel crossed two plants that were heterozygous for purple flower color.
Which genotypes could he have used to represent the cross? correct answer
-B. -- Pp ´ Pp
The pedigree traces red-green color blindness.
mc021-1.jpg
Which family members have red-green color blindness? correct answer -A
-- Sam, Tim, Bella, and Joshua
Unattached earlobes is a dominant trait, E. A parent who is homozygous for
unattached earlobes is crossed with a parent who is homozygous for attached
earlobes. What is the genotypic ratio of their offspring? correct answer -A.
-- 100 percent Ee
Hemophilia is an X-linked recessive disorder that is passed through
generations and can be traced by using a pedigree.
mc015-1.jpg
Who has hemophilia in the pedigree that is shown? correct answer -B --
Fred and Luke
The Punnett square predicts the ratio of genotypes in the offspring, based on
the genotypes of the parents. The Punnett square below examines the chance
of offspring having freckles, which is a dominant trait.
mc019-1.jpg
Based on the Punnett square, what is the probability that the offspring will
have freckles? correct answer -C. -- 75 percent
Why is it important to know a person's rhesus factor before a blood
transfusion? correct answer -D -- A patient who is Rh- can receive only Rh-
blood.
Which inheritance pattern results when parents are crossed for pure traits
and the resulting offspring have traits that appear to blend? correct answer
-a -- incomplete dominance
Mendel crossed two plants that were heterozygous for purple flower color.
Which genotypes could he have used to represent the cross? correct answer
-B. -- Pp ´ Pp
The pedigree traces red-green color blindness.
mc021-1.jpg
Which family members have red-green color blindness? correct answer -A
-- Sam, Tim, Bella, and Joshua
Unattached earlobes is a dominant trait, E. A parent who is homozygous for
unattached earlobes is crossed with a parent who is homozygous for attached
earlobes. What is the genotypic ratio of their offspring? correct answer -A.
-- 100 percent Ee
Hemophilia is an X-linked recessive disorder that is passed through
generations and can be traced by using a pedigree.
mc015-1.jpg
Who has hemophilia in the pedigree that is shown? correct answer -B --
Fred and Luke
The Punnett square predicts the ratio of genotypes in the offspring, based on
the genotypes of the parents. The Punnett square below examines the chance
of offspring having freckles, which is a dominant trait.
mc019-1.jpg
Based on the Punnett square, what is the probability that the offspring will
have freckles? correct answer -C. -- 75 percent
Why is it important to know a person's rhesus factor before a blood
transfusion? correct answer -D -- A patient who is Rh- can receive only Rh-
blood.
Which inheritance pattern results when parents are crossed for pure traits
and the resulting offspring have traits that appear to blend? correct answer
-a -- incomplete dominance
