Meiosis and Its Significance

Name: Meiosis and Its Significance
Author: StemPy Lab

How does a cell halve its chromosome number and make four different cells? You meet the five stages of prophase I, synapsis and crossing over, and the two divisions of meiosis. Then you compare meiosis with mitosis and see why it keeps the chromosome number steady and makes variation. It serves the Indian syllabus (NCERT, NEET) and the matching topic of A-Level, IB and AP.

3 lessons, about 1 h 25 min3 simulations10 problems3 practice questionsPython in every lesson

Created by StemPy Lab

Course outline (3 lessons)

Lesson 1about 30 min
Meiosis I and the stages of prophase I
Sexual reproduction needs cells with half the usual number of chromosomes. Meiosis makes them. Its first division begins with a long and busy prophase I, in which the two chromosomes of each pair come together and swap pieces. This lesson follows the five stages of prophase I.
1 simulation1 practice question1 Python program4 problems
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Lesson 2about 30 min
Meiosis II and the four haploid cells
After prophase I, the pairs line up and the two members of each pair are pulled apart. Meiosis II then separates the sister chromatids as in mitosis. One cell ends as four cells, each with half the chromosomes. This lesson follows the chromosomes and the DNA through both divisions.
1 simulation1 practice question1 Python program3 problems1 Python lab
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Lesson 3about 25 min
Mitosis and meiosis compared, and why meiosis matters
Mitosis makes two identical cells for growth. Meiosis makes four different cells for reproduction. This lesson sets the two side by side, and then shows why meiosis matters: it keeps the chromosome number of a species steady, and it makes variation.
1 simulation1 practice question1 Python program3 problems1 Python lab1 question set1 note
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Meiosis and Its Significance: Practice Paper

20 questions · 15 min

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Meiosis and Its Significance

Course outline (3 lessons)

Meiosis I and the stages of prophase I

Meiosis II and the four haploid cells

Mitosis and meiosis compared, and why meiosis matters

Test Your Learning

Your teacher

Discussion (0)