Edexcel IGCSE Biology 3.30 Natural selection
Practise interpreting chromosome tables and karyotypes to compare meiosis with mitosis and explain haploid gamete formation.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- 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
3.30 Meiosis and haploid gametes question 1
[Maximum number: 1]
A species of grass has a diploid chromosome number of 12.
Which row in the table shows the number of chromosomes in the nucleus of a pollen grain, and in the nucleus of a root cell, of this grass?
Number of chromosomes present
Pollen grain nucleus
Root cell nucleus
A
6
6
B
6
12
C
12
6
B
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