BIO 1404 LAB PRACTICAL CH 6 – 9 EXAM UPDATED QUESTIONS AND ANSWERS
During ___________, the chromosomes are arranged by microtubules at the equatorial plane in the
center of the cell. - CORRECT ANSWER✅✅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. - CORRECT
ANSWER✅✅10, 20
Crossing over occurs during this process. (Check all that apply.) - CORRECT ANSWER✅✅Oogenesis,
Spermatogenesis
If a cell in G1 has 24 chromosomes, then in G2 there will be _________ sister chromatids, and
__________ chromosomes after mitosis. - CORRECT ANSWER✅✅48, 24
Where sister chromatids are attached. - CORRECT ANSWER✅✅Centromere
When nuclear material is duplicated. - CORRECT ANSWER✅✅S Phase
A groove at the cell surface located between dividing animal cells. - CORRECT ANSWER✅✅Cleavage
Furrow
A protein structure attached to the centromere. - CORRECT ANSWER✅✅Kinetochores
Fusion of an egg with more than one sperm. - CORRECT ANSWER✅✅Polyspermy
Chromosomes that have the same set of genes, one from the mother and one from the father. -
CORRECT ANSWER✅✅Homologous Pair
Microtubule organizing center. - CORRECT ANSWER✅✅Centrosome
, A membrane structure located between dividing plant cells. - CORRECT ANSWER✅✅Cell Plate
A cell with two nuclei. - CORRECT ANSWER✅✅Diakryon
A microtubule structure in animal centrosomes. - CORRECT ANSWER✅✅Centriole
Reciprocal exchange of genetic material between non-sister chromatids. - CORRECT
ANSWER✅✅Crossing-over
Which of the following is a diploid male cell? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅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. - CORRECT ANSWER✅✅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 _________. - CORRECT ANSWER✅✅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
During ___________, the chromosomes are arranged by microtubules at the equatorial plane in the
center of the cell. - CORRECT ANSWER✅✅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. - CORRECT
ANSWER✅✅10, 20
Crossing over occurs during this process. (Check all that apply.) - CORRECT ANSWER✅✅Oogenesis,
Spermatogenesis
If a cell in G1 has 24 chromosomes, then in G2 there will be _________ sister chromatids, and
__________ chromosomes after mitosis. - CORRECT ANSWER✅✅48, 24
Where sister chromatids are attached. - CORRECT ANSWER✅✅Centromere
When nuclear material is duplicated. - CORRECT ANSWER✅✅S Phase
A groove at the cell surface located between dividing animal cells. - CORRECT ANSWER✅✅Cleavage
Furrow
A protein structure attached to the centromere. - CORRECT ANSWER✅✅Kinetochores
Fusion of an egg with more than one sperm. - CORRECT ANSWER✅✅Polyspermy
Chromosomes that have the same set of genes, one from the mother and one from the father. -
CORRECT ANSWER✅✅Homologous Pair
Microtubule organizing center. - CORRECT ANSWER✅✅Centrosome
, A membrane structure located between dividing plant cells. - CORRECT ANSWER✅✅Cell Plate
A cell with two nuclei. - CORRECT ANSWER✅✅Diakryon
A microtubule structure in animal centrosomes. - CORRECT ANSWER✅✅Centriole
Reciprocal exchange of genetic material between non-sister chromatids. - CORRECT
ANSWER✅✅Crossing-over
Which of the following is a diploid male cell? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅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? - CORRECT ANSWER✅✅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. - CORRECT ANSWER✅✅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 _________. - CORRECT ANSWER✅✅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
