What happens during metaphase II of meiosis? A. Homologous chromosomes are rando
ID: 95629 • Letter: W
Question
What happens during metaphase II of meiosis?
A. Homologous chromosomes are randomly arranged in the middle of the cell.
B. The nuclear membrane begins to form around haploid sets of chromosomes.
C. Sister chromatids separate from each other and migrate to opposite ends of the cell.
D. Homologous chromosomes form and crossing over occurs between them.
E. Homologous chromosomes separate but sister chromatids remain joined at their centromeres.
F. Sister chromatids are distributed in a single layer across the center of the cell.
Which phrase describes a sister chromatid?
A. the second copy of a homologous chromosome
B. the second, noncoding strand of double-stranded DNA
C. RNA that is copied directly from the original DNA template
D. one copy of a duplicated chromosome
Cell division by mitosis is a mechanism of asexual cell replication. Some single-cell organisms reproduce by cell division, and cell division enables multicellular organisms to grow and to repair damaged cells. Which of the following are products of cell division by mitosis?
A. two daughter cells with identical chromosomes
B. four genetically similar daughter cells
C. daughter cells with half the number of chromosomes
D. daughter cells that are genetically variable
.
In general, what causes normal cells to become cancer cells?
A. rapid cell division
B. loss of cell cycle control
C. apoptosis
D. loss of the ability to divide
D. one copy of a duplicated chromosome
Explanation / Answer
1- sister chromatids are distributed in single layer across the centre of the cell.
2-d- one copy of duplicate chromosome.
3-a-two daughter cell with same number of chromosomes.
4-b-lost of cell cycle control
Note- during metaphase second sister chromatids arrange themselve in middle of the cell so that during anaphase second these can seprate .
The two sister chromatids are a single chromosomes that carry the genetic material
During mitosis cell division the genetic material remain same and a single cell divide into two , while in meiosis thre are four daughter cell with half the genetic material
In cancer cell there is lost of cell cycle control , which lead to oncogenic property of cell to activate
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