1|Page
BIO 156 RIO EXAM 2 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT
VERIFIED ANSWERS (DETAILED ANSWERS)
ALREADY GRADED A+ 100% GUARANTEED TO
PASS CONCEPTS!!!
Interphase is the stage when __________. - ....ANSWER
....✔✔ a cell grows and duplicates its DNA.
In an individual with a dominant phenotype is crossed
with an individual with a recessive phenotype, 4 of their
9 offspring show the recessive phenotype. What is the
genotype of the first parent? - ....ANSWER ....✔✔ Bb
Solve this monohybrid genetics problem: Black hair is
governed by the dominant gene (B) and blond hair is
determined by the recessive gene (b). In this monohybrid
cross, if both parents are heterozygous, what
percentage of the offspring would be expected to have
blond hair? - ....ANSWER ....✔✔ 25%
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A Punnett square can be used to
determine___________. - ....ANSWER ....✔✔ the
genotype of an offspring
Different alleles of the same gene are found -
....ANSWER ....✔✔ at the same place on homologous
chromosomes
If a parental cell has 14 chromosomes prior to mitosis,
how many chromosomes will each daughter cell have? -
....ANSWER ....✔✔ 14 because the chromatids
separate
a duplicated chromosome has _____ chromatid(s) -
....ANSWER ....✔✔ 2
Mendel was fortunate to work out the laws of
segregation and independent assortment because he
used an organism that reproduced quickly and in which
the traits were discrete (easy to observe). Mendel's
organism of choice was the - ....ANSWER ....✔✔ pea
plant
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What is the importance of crossing-over? - ....ANSWER
....✔✔ It increases the likelihood that daughter cells
contain different genetic material.
Assuming that the probability of having a female child is
50% and the probability of having a male child is also
50%, what is the probability that a couple's firstborn
child is female and second-born child is male? -
....ANSWER ....✔✔ 25%
If a parental cell has 12 chromosomes, then each of the
daughter cells following meiosis will have _____. -
....ANSWER ....✔✔ 6 chromosomes.
Which of the following genotypes would be homozygous
dominant for both alleles? - ....ANSWER ....✔✔ DDEE
Which sequence of stages in mitosis is correct? -
....ANSWER ....✔✔ prophase, prometaphase,
metaphase, anaphase, telophase
During which stage of meiosis does crossing-over occur?
- ....ANSWER ....✔✔ prophase I
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Which occurs in anaphase? - ....ANSWER ....✔✔
Chromosomes move to opposite poles.
If both parents in a dihybrid cross are heterozygous for
both traits, the expected phenotypic ratio in the
offspring would be - ....ANSWER ....✔✔ 9:3:3:1
A pair of chromosomes that are similar in length, shape,
and the traits they govern are called ____. -
....ANSWER ....✔✔ homologous chromosomes
If a pea plant shows a recessive phenotype, _____. -
....ANSWER ....✔✔ it can only be tt
The offspring of a monohybrid testcross would show the
genotype(s) _____. - ....ANSWER ....✔✔ Aa and aa
In which kind of cross would you expect to find a ratio
of 3:1 among the F2 offspring? - ....ANSWER ....✔✔
monohybrid cross
The F2 offspring of a monohybrid cross would show the
genotype(s) ____. - ....ANSWER ....✔✔ AA, Aa, and
aa
BIO 156 RIO EXAM 2 NEWEST ACTUAL EXAM
WITH COMPLETE QUESTIONS AND CORRECT
VERIFIED ANSWERS (DETAILED ANSWERS)
ALREADY GRADED A+ 100% GUARANTEED TO
PASS CONCEPTS!!!
Interphase is the stage when __________. - ....ANSWER
....✔✔ a cell grows and duplicates its DNA.
In an individual with a dominant phenotype is crossed
with an individual with a recessive phenotype, 4 of their
9 offspring show the recessive phenotype. What is the
genotype of the first parent? - ....ANSWER ....✔✔ Bb
Solve this monohybrid genetics problem: Black hair is
governed by the dominant gene (B) and blond hair is
determined by the recessive gene (b). In this monohybrid
cross, if both parents are heterozygous, what
percentage of the offspring would be expected to have
blond hair? - ....ANSWER ....✔✔ 25%
,2|Page
A Punnett square can be used to
determine___________. - ....ANSWER ....✔✔ the
genotype of an offspring
Different alleles of the same gene are found -
....ANSWER ....✔✔ at the same place on homologous
chromosomes
If a parental cell has 14 chromosomes prior to mitosis,
how many chromosomes will each daughter cell have? -
....ANSWER ....✔✔ 14 because the chromatids
separate
a duplicated chromosome has _____ chromatid(s) -
....ANSWER ....✔✔ 2
Mendel was fortunate to work out the laws of
segregation and independent assortment because he
used an organism that reproduced quickly and in which
the traits were discrete (easy to observe). Mendel's
organism of choice was the - ....ANSWER ....✔✔ pea
plant
,3|Page
What is the importance of crossing-over? - ....ANSWER
....✔✔ It increases the likelihood that daughter cells
contain different genetic material.
Assuming that the probability of having a female child is
50% and the probability of having a male child is also
50%, what is the probability that a couple's firstborn
child is female and second-born child is male? -
....ANSWER ....✔✔ 25%
If a parental cell has 12 chromosomes, then each of the
daughter cells following meiosis will have _____. -
....ANSWER ....✔✔ 6 chromosomes.
Which of the following genotypes would be homozygous
dominant for both alleles? - ....ANSWER ....✔✔ DDEE
Which sequence of stages in mitosis is correct? -
....ANSWER ....✔✔ prophase, prometaphase,
metaphase, anaphase, telophase
During which stage of meiosis does crossing-over occur?
- ....ANSWER ....✔✔ prophase I
, 4|Page
Which occurs in anaphase? - ....ANSWER ....✔✔
Chromosomes move to opposite poles.
If both parents in a dihybrid cross are heterozygous for
both traits, the expected phenotypic ratio in the
offspring would be - ....ANSWER ....✔✔ 9:3:3:1
A pair of chromosomes that are similar in length, shape,
and the traits they govern are called ____. -
....ANSWER ....✔✔ homologous chromosomes
If a pea plant shows a recessive phenotype, _____. -
....ANSWER ....✔✔ it can only be tt
The offspring of a monohybrid testcross would show the
genotype(s) _____. - ....ANSWER ....✔✔ Aa and aa
In which kind of cross would you expect to find a ratio
of 3:1 among the F2 offspring? - ....ANSWER ....✔✔
monohybrid cross
The F2 offspring of a monohybrid cross would show the
genotype(s) ____. - ....ANSWER ....✔✔ AA, Aa, and
aa
