KS3 / GCSE Biology: Mitosis Rap. ... Then the doubled chromosomes line up along the central axis of the cell, and microtubules called spindle fibres pull them apart to opposite ends of the cell.

Revise GCSE Biology by listening to these podcasts from Bitesize and BBC Sounds. ... Chromosomes are the cookbooks (of which you have 23 pairs – so 46 books in total.) ...

How many chromosomes do humans have in each body cell - and which scientist first came up with the idea of biological inheritance? We have selected GCSE-level questions about every area of biology for ...

Test yourself in GCSE science with these questions from this year’s OCR GCSE biology, physics and chemistry papers. 1. ... D The cells produced have half the number of chromosomes. 4.

A biology professor at a Texas community college has claimed he was fired for “religious preaching” after he taught a lesson about how sex is determined by X and Y chromosomes. Johnson Varkey ...