Test Flashcards
(34 cards)
Which sex cells are NOT formed during meiosis?
Somatic cells
Which letter in the diagram correspond to cells that are haploid?
B and C
Consider the cell labeled X in figure 12-1 containing 4 chromosomes. Which of the 4 cells below it represents a healthy gamete that could be produced from this cell?
A
During which phase of meiosis do homologous pairs of chromosomes line up next to one another along the equator?
Meta phase 1
The typical human body cells contain 46 chromosomes. How many chromosomes are found in a typical human sperm?
23
Crossing over would most likely occur during which stage of the cell cycle?
When homologous chromosomes line up in pairs.
Which event during meiosis leads to a reduction in chromosome number from 2n to n?
Homologous chromosomes travel to opposite sides of the cell
A gamete has one-half the number of chromosomes of a regular body cell?
True
Homologous chromosomes are 2 chromosomes are 2 chromosomes with identical DNA base sequences?
False
During meiosis, chromosome number is reduced through 3 rounds of cell division?
False
During meiosis 1 homologous chromosomes pairs are separated when the centromeres split apart?
False
Meiosis occurs during both sexual reproduction and asexual reproduction?
False
What is the role of the spindle fibers?
To move chromosomes in the cell
Which stage of meiosis is represented in figure 12.2?
Meta phase 2
The distruption of chromosomes in 1 type of cell division is shown in the diagram above. Which process is being represented in a diagram?
Meiosis
Compared to the number of chromosomes contained in a body cell how many chromosomes would normally be contained in a gamete?
Half as many
In which phase of meiosis would certain gene segments of the homologous pairs of chromosomes “cross-over” and exchange genetic information?
Pro phase 1
Two similar chromosomes that you inherit from your parents are called?
Homologous chromosomes
Which event takes place during Ana phase 2 of meiosis?
Sister chromostids separate
Somatic cells in human contain ____ chromosomes and an example is _____?
46 ; Heart cells
Chromosomes line up in the middle of the cell single file during which phase?
Meta phase 2
Alligator has 16 chromosomes. How many should be present in a cell of same alligator?
32
What is occurring in A and B?
Meiosis and Fertilization
Haploid corn cells?
10