BIO 1404 Lab Practical Ch 6 - 9 Test Questions with Correct Answers Latest Update 2025
During ___________, the chromosomes are arranged by microtubules at the equatorial plane in
the center of the cell. - Answers Metaphase
If a cell in G1 has 20 chromosomes, then at the end of meiosis I there will be _________
chromosomes in each daughter cell, and __________ sister chromatids in each daughter cell. -
Answers 10, 20
Crossing over occurs during this process. (Check all that apply.) - Answers Oogenesis,
Spermatogenesis
If a cell in G1 has 24 chromosomes, then in G2 there will be _________ sister chromatids, and
__________ chromosomes after mitosis. - Answers 48, 24
Where sister chromatids are attached. - Answers Centromere
When nuclear material is duplicated. - Answers S Phase
A groove at the cell surface located between dividing animal cells. - Answers Cleavage Furrow
A protein structure attached to the centromere. - Answers Kinetochores
Fusion of an egg with more than one sperm. - Answers Polyspermy
Chromosomes that have the same set of genes, one from the mother and one from the father. -
Answers Homologous Pair
Microtubule organizing center. - Answers Centrosome
A membrane structure located between dividing plant cells. - Answers Cell Plate
A cell with two nuclei. - Answers Diakryon
A microtubule structure in animal centrosomes. - Answers Centriole
Reciprocal exchange of genetic material between non-sister chromatids. - Answers Crossing-
over
Which of the following is a diploid male cell? - Answers Spermatogonium
A geneticist discovered a new species of insect with very long antennae. He performed the
following cross (Bb x bb) and counted the number of offspring with different antennae lengths.
He was unsure if his observations matched what he expected to see, so he performed a chi-
squared goodness of fit test and calculated Х2 = 1.24. If the degrees of freedom are 1, what
range of p-values does his Х2 fall between? - Answers 0.5 > Х2 > 0.1
A geneticist discovered a new species of flower with very bright red petals (R) which are
, dominant to white petals (r), and round leaves (L) which are dominant to oblong leaves (l). She
wanted to observe what the offspring would look like when she crossed the following two
individuals: rrLl x Rrll. Which of the following best describes the parent's phenotypes? - Answers
rrLl has white petals and round leaves; Rrll has red petals and oblong leaves
Which of the following are reasons that Drosophila are an ideal experimental animal? Select all
that apply. - Answers They are easy to grow and maintain in a lab. They are easy to grow and
maintain in a lab. They have a small number of well characterized chromosomes.
The Law of ___________ is when two __________ separate from each other during the production
of gametes. Each gamete contains _________. - Answers Segregation; alleles; one allele
A geneticist discovered a new species of flower with very bright petals. She wanted to observe
what the offspring would look like when she crossed the following two individuals: Aa x aa.
Which of the following best describes the parent's genotypes? - Answers Aa = heterozygous, aa
= homozygous recessive
Mendel found that yellow pea pod color (G) was dominant to green pea pod color (g). For each
of the crosses below, what percentage of offspring are expected to be yellow?
1) GG x gg
2) Gg x Gg
3) Gg x gg - Answers 1) 100%
2) 75%
3) 50%
Mendel found that yellow pea pod color (G) was dominant to green pea pod color (g), and that
round seeds (W) were dominant to wrinkled seeds (w). What percentage of each of the
phenotypes below are expected from the following cross? ggWW x ggWw
1) Yellow and round
2) Yellow and wrinkled
3) Green and round
4) Green and wrinkled - Answers 1) 0%
2) 0%
During ___________, the chromosomes are arranged by microtubules at the equatorial plane in
the center of the cell. - Answers Metaphase
If a cell in G1 has 20 chromosomes, then at the end of meiosis I there will be _________
chromosomes in each daughter cell, and __________ sister chromatids in each daughter cell. -
Answers 10, 20
Crossing over occurs during this process. (Check all that apply.) - Answers Oogenesis,
Spermatogenesis
If a cell in G1 has 24 chromosomes, then in G2 there will be _________ sister chromatids, and
__________ chromosomes after mitosis. - Answers 48, 24
Where sister chromatids are attached. - Answers Centromere
When nuclear material is duplicated. - Answers S Phase
A groove at the cell surface located between dividing animal cells. - Answers Cleavage Furrow
A protein structure attached to the centromere. - Answers Kinetochores
Fusion of an egg with more than one sperm. - Answers Polyspermy
Chromosomes that have the same set of genes, one from the mother and one from the father. -
Answers Homologous Pair
Microtubule organizing center. - Answers Centrosome
A membrane structure located between dividing plant cells. - Answers Cell Plate
A cell with two nuclei. - Answers Diakryon
A microtubule structure in animal centrosomes. - Answers Centriole
Reciprocal exchange of genetic material between non-sister chromatids. - Answers Crossing-
over
Which of the following is a diploid male cell? - Answers Spermatogonium
A geneticist discovered a new species of insect with very long antennae. He performed the
following cross (Bb x bb) and counted the number of offspring with different antennae lengths.
He was unsure if his observations matched what he expected to see, so he performed a chi-
squared goodness of fit test and calculated Х2 = 1.24. If the degrees of freedom are 1, what
range of p-values does his Х2 fall between? - Answers 0.5 > Х2 > 0.1
A geneticist discovered a new species of flower with very bright red petals (R) which are
, dominant to white petals (r), and round leaves (L) which are dominant to oblong leaves (l). She
wanted to observe what the offspring would look like when she crossed the following two
individuals: rrLl x Rrll. Which of the following best describes the parent's phenotypes? - Answers
rrLl has white petals and round leaves; Rrll has red petals and oblong leaves
Which of the following are reasons that Drosophila are an ideal experimental animal? Select all
that apply. - Answers They are easy to grow and maintain in a lab. They are easy to grow and
maintain in a lab. They have a small number of well characterized chromosomes.
The Law of ___________ is when two __________ separate from each other during the production
of gametes. Each gamete contains _________. - Answers Segregation; alleles; one allele
A geneticist discovered a new species of flower with very bright petals. She wanted to observe
what the offspring would look like when she crossed the following two individuals: Aa x aa.
Which of the following best describes the parent's genotypes? - Answers Aa = heterozygous, aa
= homozygous recessive
Mendel found that yellow pea pod color (G) was dominant to green pea pod color (g). For each
of the crosses below, what percentage of offspring are expected to be yellow?
1) GG x gg
2) Gg x Gg
3) Gg x gg - Answers 1) 100%
2) 75%
3) 50%
Mendel found that yellow pea pod color (G) was dominant to green pea pod color (g), and that
round seeds (W) were dominant to wrinkled seeds (w). What percentage of each of the
phenotypes below are expected from the following cross? ggWW x ggWw
1) Yellow and round
2) Yellow and wrinkled
3) Green and round
4) Green and wrinkled - Answers 1) 0%
2) 0%
