GENETICS EXAM AND ITS
ANSWERS
The punnett square shows that the gene for pea shape
and and the gene for pea color
are linked
The principles of probability can be used to
predict the traits of the offspring produced by genetic
crosses
A punnett square shows all the following except
the actual results of a genetic cross
In the P generation, a yellow pea plant was crossed
with a green pea plant. If alleles did not segregate
during gamete formation
all of the F1 plants would be green
Gregor Mendel's principles of genetics apply to
all organisms
I observe a cell going through some sort of meiosis
and at the end there is one big cell and three tiny
ones. What type of cell have i just watched form?
An ova
During which step of meiosis does independent
assortment take place
metaphase I
How can you be sure of an individual's genotype by
looking at it?
If its phenotype is recessive
The principle of dominance states that
, some alleles are dominant and others are recessive
Crossing-over rarely occurs in mitosis, unlike
meiosis. Why?
Tetrads rarely form during mitosis
If an organism's diploid number is 12, its haploid
number is
6
If you made a punnett square showing Gregor
Mendel's cross between true-breeding tall plants and
true-breeding short plants, the square would show
that offspring had
a genotype that was different from that of both parents
What trait of pea plants was NOT studied by Gregor
Mendel
gamete formation
Alleles for the same gene separate. This is called
the law of segregation
if a pea plant RrYy is crossed with a pea plant RRYy
how many different phenotypes are their offspring
expected to show
2
A tall plant is crossed with a short plant. If the tall F1
pea plants are allowed to self polllinate,
some of the offspring will be tall, and some will be short
The number of chromosomes in a somatic cell is
represented by the symbol
2N
How many different allele combinations would be
found in the gametes produced by pea plant whose
genotype is RrYy?
4
ANSWERS
The punnett square shows that the gene for pea shape
and and the gene for pea color
are linked
The principles of probability can be used to
predict the traits of the offspring produced by genetic
crosses
A punnett square shows all the following except
the actual results of a genetic cross
In the P generation, a yellow pea plant was crossed
with a green pea plant. If alleles did not segregate
during gamete formation
all of the F1 plants would be green
Gregor Mendel's principles of genetics apply to
all organisms
I observe a cell going through some sort of meiosis
and at the end there is one big cell and three tiny
ones. What type of cell have i just watched form?
An ova
During which step of meiosis does independent
assortment take place
metaphase I
How can you be sure of an individual's genotype by
looking at it?
If its phenotype is recessive
The principle of dominance states that
, some alleles are dominant and others are recessive
Crossing-over rarely occurs in mitosis, unlike
meiosis. Why?
Tetrads rarely form during mitosis
If an organism's diploid number is 12, its haploid
number is
6
If you made a punnett square showing Gregor
Mendel's cross between true-breeding tall plants and
true-breeding short plants, the square would show
that offspring had
a genotype that was different from that of both parents
What trait of pea plants was NOT studied by Gregor
Mendel
gamete formation
Alleles for the same gene separate. This is called
the law of segregation
if a pea plant RrYy is crossed with a pea plant RRYy
how many different phenotypes are their offspring
expected to show
2
A tall plant is crossed with a short plant. If the tall F1
pea plants are allowed to self polllinate,
some of the offspring will be tall, and some will be short
The number of chromosomes in a somatic cell is
represented by the symbol
2N
How many different allele combinations would be
found in the gametes produced by pea plant whose
genotype is RrYy?
4
