INTRODUCTION TO GENETICS
CHAPTER 11 QUESTIONS AND
ANSWERS
A pea plant heterozygous for height and seed color
(TtYy) is crossed with a pea plant heterozygous for
height but homozygous for seed color (Ttyy). If 80
offspring are produced, how many are expected to be
tall and have yellow seeds?
30 offspring
How many sets of chromosomes are in a diploid cell?
Two sets
The gene map of a fruit fly's chromosomes shows the
relative locations of the star eye, dumpy wing, and
black body genes to be 1.3, 13.0, and 48.5. Between
which two genes does crossing-over occur most
frequently?
Star eye and black body
Gregor Mendel used pea plants to study
a.) flowering.
b.) cross-pollination.
c.) the inheritance of traits.
d.) gamete formation.
c.) the inheritance of traits.
Offspring that result from crosses between parents
with different traits
a.) make up the F2 generation.
, b.) make up the parental generation.
c.) are true-breeding.
d.) are called hybrids.
d.) are called hybrids.
Gregor Mendel removed the male parts from the
flowers of some plants in order to
a.) stimulate self-pollination.
b.) prevent cross-pollination.
c.) make a controlled crosses between plants.
d.) prevent hybrids from forming.
c.) make a controlled crosses between plants.
Gregor Mendel concluded that traits are
a.) inherited through the passing of factors from
parents to offspring.
b.) determined by dominant factors only.
c.) not inherited by offspring.
d.) determined by recessive
a.) inherited through the passing of factors from parents to
offspring.
When Gregor Mendel crossed a tall plant with a short
plant, the F1 plants inherited
a.) an allele for tallness from the tall parent and an
allele for shortness from the short parent
b.) an allele for tallness from each parent.
c.) an allele for shortness from each parent.
d.) an allele from only the tall parent.
a.) an allele for tallness from the tall parent and an allele
for shortness from the short parent.
The principle of dominance states that
a.) alleles are neither dominant nor recessive.
b.) all alleles are dominant.
CHAPTER 11 QUESTIONS AND
ANSWERS
A pea plant heterozygous for height and seed color
(TtYy) is crossed with a pea plant heterozygous for
height but homozygous for seed color (Ttyy). If 80
offspring are produced, how many are expected to be
tall and have yellow seeds?
30 offspring
How many sets of chromosomes are in a diploid cell?
Two sets
The gene map of a fruit fly's chromosomes shows the
relative locations of the star eye, dumpy wing, and
black body genes to be 1.3, 13.0, and 48.5. Between
which two genes does crossing-over occur most
frequently?
Star eye and black body
Gregor Mendel used pea plants to study
a.) flowering.
b.) cross-pollination.
c.) the inheritance of traits.
d.) gamete formation.
c.) the inheritance of traits.
Offspring that result from crosses between parents
with different traits
a.) make up the F2 generation.
, b.) make up the parental generation.
c.) are true-breeding.
d.) are called hybrids.
d.) are called hybrids.
Gregor Mendel removed the male parts from the
flowers of some plants in order to
a.) stimulate self-pollination.
b.) prevent cross-pollination.
c.) make a controlled crosses between plants.
d.) prevent hybrids from forming.
c.) make a controlled crosses between plants.
Gregor Mendel concluded that traits are
a.) inherited through the passing of factors from
parents to offspring.
b.) determined by dominant factors only.
c.) not inherited by offspring.
d.) determined by recessive
a.) inherited through the passing of factors from parents to
offspring.
When Gregor Mendel crossed a tall plant with a short
plant, the F1 plants inherited
a.) an allele for tallness from the tall parent and an
allele for shortness from the short parent
b.) an allele for tallness from each parent.
c.) an allele for shortness from each parent.
d.) an allele from only the tall parent.
a.) an allele for tallness from the tall parent and an allele
for shortness from the short parent.
The principle of dominance states that
a.) alleles are neither dominant nor recessive.
b.) all alleles are dominant.
