Genetics Exam 1 Review UPDATED Exam
Questions and CORRECT Answers
Which of the following statements is false?
A : Sexual reproduction produces clones
B : In sequel reproduction, the parent passes a complete set of genes to its offsprings.
C : In sexual reproduction, offspring receive two genes for very trait.
D : Sexual reproduction puts together new combinations of genes.
E : In sexual reproduction, both meiosis and fertilization must occur during the lifecycle. -
CORRECT ANSWER - A : Sexual reproduction produces clones.
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
In G2 of interphase how many chromosomes will be found per cell? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
In G2 of interphase how many DNA molecules will be found per cell ? - CORRECT
ANSWER - 40
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
,After telephase I of meiosis how many chromosomes will be found per nucleus? - CORRECT
ANSWER - 10
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After telephase 1 of meiosis, how many DNA molecules will be found per nucleus? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After cytokinesis of meiosis how many chromosome will be found per cell ? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After cytokinesis of meiosis II how many DNA molecules will be found per cell ? - CORRECT
ANSWER - 10
Various forms of a gene at a given locus are called ? - CORRECT ANSWER - Alleles
How many sperm would be expected to form from 300 secondary spermatocytes ? - CORRECT
ANSWER - 600
How many ovum would be expected to form from 300 secondary oocytes? - CORRECT
ANSWER - 300
, Given that a horse has a diploid chromosome number of 64, and a zebra has a diploid
chromosome number of 46, what would be the expected chromosome number in the somatic
tissues if a viable hybrid were possible between these two animals ? - CORRECT
ANSWER - 55
What occurs only in meiosis I and NOT meiosis II ? - CORRECT ANSWER - Separation
of homologues
How many different gamete types could be produced through independent assortment by an
individual with the genotype AABbCcDdeeFfGg ? - CORRECT ANSWER - 32
In beetles green is dominant to black. If two beetles are mated and produce 35 black and 32
green offspring, what would you predict the genotypes of the parents to be? - CORRECT
ANSWER - gg x Gg
In humans, tongue rolling is a dominant trait, those with the recessive condition cannot roll their
tongues. Dave can roll his tongue, but his father could not. He is married to Nancy, who can roll
her tongue, but her mother could not. What is the probability (%) that their first born child will
be able to roll his tongue? - CORRECT ANSWER - 75%
If two six-sided dice are rolled, what is the probability that the total number of spots showing is
5? - CORRECT ANSWER - 1/9
In a cross of AaBBCCDdEe X AabbCcddEe, what proportion of the offspring will have the
aaBbCCddEE genotype? - CORRECT ANSWER - 1/64
Two true-breeding stocks of garden peas are crossed. One parent had green, inflated pea pods
and the other had yellow, constricted pea pods, ; all the F1 individuals had green, inflated pea
pods. If 1200 F2 offspring resulted from the cross, approximately how many of them would you
expect to have yellow, inflated pea pods? (Assume independent assortment.) - CORRECT
ANSWER - 225
Questions and CORRECT Answers
Which of the following statements is false?
A : Sexual reproduction produces clones
B : In sequel reproduction, the parent passes a complete set of genes to its offsprings.
C : In sexual reproduction, offspring receive two genes for very trait.
D : Sexual reproduction puts together new combinations of genes.
E : In sexual reproduction, both meiosis and fertilization must occur during the lifecycle. -
CORRECT ANSWER - A : Sexual reproduction produces clones.
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
In G2 of interphase how many chromosomes will be found per cell? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
In G2 of interphase how many DNA molecules will be found per cell ? - CORRECT
ANSWER - 40
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
,After telephase I of meiosis how many chromosomes will be found per nucleus? - CORRECT
ANSWER - 10
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After telephase 1 of meiosis, how many DNA molecules will be found per nucleus? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After cytokinesis of meiosis how many chromosome will be found per cell ? - CORRECT
ANSWER - 20
Each chromosome consists of only one centromere, but during certain times in the cell cycle
could consist of two DNA molecules (sister chromatids). If a cell in G1 of interphase has 20
chromosomes. . . .
After cytokinesis of meiosis II how many DNA molecules will be found per cell ? - CORRECT
ANSWER - 10
Various forms of a gene at a given locus are called ? - CORRECT ANSWER - Alleles
How many sperm would be expected to form from 300 secondary spermatocytes ? - CORRECT
ANSWER - 600
How many ovum would be expected to form from 300 secondary oocytes? - CORRECT
ANSWER - 300
, Given that a horse has a diploid chromosome number of 64, and a zebra has a diploid
chromosome number of 46, what would be the expected chromosome number in the somatic
tissues if a viable hybrid were possible between these two animals ? - CORRECT
ANSWER - 55
What occurs only in meiosis I and NOT meiosis II ? - CORRECT ANSWER - Separation
of homologues
How many different gamete types could be produced through independent assortment by an
individual with the genotype AABbCcDdeeFfGg ? - CORRECT ANSWER - 32
In beetles green is dominant to black. If two beetles are mated and produce 35 black and 32
green offspring, what would you predict the genotypes of the parents to be? - CORRECT
ANSWER - gg x Gg
In humans, tongue rolling is a dominant trait, those with the recessive condition cannot roll their
tongues. Dave can roll his tongue, but his father could not. He is married to Nancy, who can roll
her tongue, but her mother could not. What is the probability (%) that their first born child will
be able to roll his tongue? - CORRECT ANSWER - 75%
If two six-sided dice are rolled, what is the probability that the total number of spots showing is
5? - CORRECT ANSWER - 1/9
In a cross of AaBBCCDdEe X AabbCcddEe, what proportion of the offspring will have the
aaBbCCddEE genotype? - CORRECT ANSWER - 1/64
Two true-breeding stocks of garden peas are crossed. One parent had green, inflated pea pods
and the other had yellow, constricted pea pods, ; all the F1 individuals had green, inflated pea
pods. If 1200 F2 offspring resulted from the cross, approximately how many of them would you
expect to have yellow, inflated pea pods? (Assume independent assortment.) - CORRECT
ANSWER - 225
