Biology Test -- Meiosis

True
T or F – A gamete has one-half the number of chromosomes of a regular body cell
False
T or F – Homologous chromosomes are two chromosomes with identical DNA sequences
We will write a custom essay sample on
Biology Test — Meiosis
or any similar topic only for you
Order now
True
T or F – Recent research suggests that beneficial mutations accumulate faster when species undergo sexual reproduction rather that asexual reproduction
False
T or F – During meiosis, chromosome number is reduced through tree rounds of cell division
True
T or F – Sexual reproduction would be more advantageous than asexual reproduction for organisms living in an environment that is diverse and undergoes frequent changes
True
T or F – The separation of genes during crossing over occurs more frequently between genes that are far apart on a chromosomes than for genes that are close together
False
T or F – During meiosis I, homologous chromosome pairs are separated when the centromeres split apart
False
T or F – Meiosis occurs during both sexual reproduction and asexual reproduction
b
The number in Figure 10-1 represents the chromosome number found in each of the dog cells shown. The processes that are occurring at A and B are
a) mitosis and fertilization
b) meiosis and fertilization
c) mitosis and pollination
d) meiosis and pollination
b
In Figure 10-8, which set of chromatids illustrates the result of a single crossover of the homologous chromosomes?
a) A
b) B
c) C
d) D
d
In Figure 10-8, which set of chromatids will result if each chromatid crossed with a nonsister chromatid?
a) A
b) B
c) C
d) D
c
Which event during meiosis leads to a reduction in chromosome number from 2n to n?
a) Pairs of homologous chromosomes line up at the equator
b) DNA undergoes replication
c) Homologous chromosomes travel to opposite sides of the cell
d) Sister chromatids are pulled apart at the centromere
b
Crossing over would most likely occur during which stage of the cell cycle?
a) When DNA is being replicated
b) When homologous chromosomes line up in pairs
c) When centromeres are separated
d) When cytokinesis begins
c
Which is the best description of the events that take place during anaphase II?
a) The replicated chromosomes become visible
b) Homologous chromosomes line up along the equator
c) Sister chromatids are separated and pulled to opposite sides of the cell
d) Homologous pairs are separated and pulled to opposite sides of the cell
d
What is the role of the spindle fibers?
a) To join homologous chromosomes together
b) To store nucleotides prior to DNA synthesis
c) To initiate the formation of the nuclear membrane
d) To move chromosomes in the cell
a
The typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human sperm?
a) 23
b) 45
c) 46
d) 92
b
During which phase of meiosis do homologous pairs of chromosomes line up next to one another along the equator?
a) anaphase I
b) metaphase I
c) prophase II
d) metaphase II
a
Which stage of meiosis is responsible for the law of independent assortment?
a) metaphase I
b) prophase I
c) telophase I
d) metaphase II
a
Consider the cell labeled X in Figure 10-9 containing 4 chromosomes. Which of the four cells below it represents a healthy gamete that could be produced from this cell?
a) A
b) B
c) C
d) D
d
Which stage of meiosis is represented in Figure 10-10?
a) anaphase I
b) metaphase I
c) anaphase II
d) metaphase II
crossing over
Genetic recombination occurs when chromosomes undergo ___________
chromosomes
The possible combination of genes in any gamete due to independent assortment equals 2″, where n equals the number of _________
chromosomes
Two genes are considered linked when they are located close to each other on the same _______
Meiosis reduces number of chromosomes and fertilization allows them to get back together
How does meiosis maintain a constant number of chromosomes in the body cells of organisms that reproduce sexually?
Genetic information is exchanged leading to genetic variation
Explain how crossing over in meiosis results in genetic variation
Mitosis
Mitosis or Meiosis? No pairing of homologs occur
Meiosis
Mitosis or Meiosis? Two divisions
Meiosis
Mitosis or Meiosis? Four daughter cells produced
Mitosis
Mitosis or Meiosis? Associated with growth and asexual reproduction
Meiosis
Mitosis or Meiosis? Associated with sexual reproduction
Mitosis
Mitosis or Meiosis? One division
Mitosis
Mitosis or Meiosis? Two daughter cells produced
Both
Mitosis or Meiosis? Involves duplication of chromosomes
Mitosis
Mitosis or Meiosis? Chromosome number is maintained
Meiosis
Mitosis or Meiosis? Chromosome number is halved
Meiosis
Mitosis or Meiosis? Crossing over between homologous chromosomes may occur
Mitosis
Mitosis or Meiosis? Daughter cells are identical to parent cell
Meiosis
Mitosis or Meiosis? Daughter cells are not identical to parent cell
Meiosis
Mitosis or Meiosis? Produces gametes
Meiosis
Mitosis or Meiosis? Synapsis occurs in prophase
×

Hi there, would you like to get such a paper? How about receiving a customized one? Check it out