Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Biology OCR A
  5. Question bank

Cell division, cell diversity and cellular organisation

EasyMedium
1234567891011121314
Question 8

During cell division, the quantity of genetic material in human cells changes as the cell goes through different phases.

Consider the following sequences describing the DNA content (relative to the haploid chromosome number, nnn) before, during, and after different types of cell division:

  • Sequence W: n→2n→nn \to 2n \to nn→2n→n
  • Sequence X: 2n→4n→2n2n \to 4n \to 2n2n→4n→2n
  • Sequence Y: 2n→4n→2n→n2n \to 4n \to 2n \to n2n→4n→2n→n
  • Sequence Z: 4n→2n→n 4n \to 2n \to n\,4n→2n→n

Which row in the table below correctly identifies the sequences for mitosis and meiosis in human cells?

MitosisMeiosis
ASequence XSequence W
BSequence YSequence X
CSequence XSequence Y
DSequence ZSequence Y

Mitosis: Sequence X; Meiosis: Sequence W

Mitosis: Sequence Y; Meiosis: Sequence X

Mitosis: Sequence X; Meiosis: Sequence Y

Mitosis: Sequence Z; Meiosis: Sequence Y

Cell division, cell diversity and cellular organisation Questions

  1. A Level
  2. /Biology
  3. /Cell division, cell diversity and cellular organisation