Edexcel IGCSE Biology 3.30 Natural selection

Edexcel IGCSE Biology syllabusBiology 4BI1First assessment 2019

Practise interpreting chromosome tables and karyotypes to compare meiosis with mitosis and explain haploid gamete formation.

How this is tested

complete tables comparing meiosis and mitosis for chromosome number, ploidy and cell number
use karyotypes to suggest nondisjunction or chromosome separation errors during meiosis
explain why meiosis makes haploid gametes with half the chromosome number

[Maximum number: 7]

Cell division can be by meiosis or by mitosis.

(a)

Where are cells dividing by meiosis found in a human?

kidney

penis

skin

testis

[ 1 ]

(b)

The table lists features comparing the processes of meiosis and mitosis in human cells. Complete the table by giving the missing information.

[ 6 ]