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829930
X and Y Chromosomes
Description
Facts about X and Y Chromosomes. Comment below if this helps you:)
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x and y chromosomes
gcse
science
biology
biology 2b
biology
2b
gsce
Mind Map by
Evangeline Taylor
, updated more than 1 year ago
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Created by
Evangeline Taylor
over 10 years ago
381
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Resource summary
X and Y Chromosomes
22 pairs of chromosomes are in every human body cell
The 23rd pair of chromosomes are labelled XX or XY
These control your Gender
All Men have XY chromosomes
Y-Chromosomes cause male characteristic
All women have XX chromosomes
XX combination allows female chromosomes to develop
When sperm are being made, the X-chromosomes and Y-chromosomes drawn apart during first division in Meiosis
50% chance that each sperm has a X-chromosomes or an Y-chromosomes
Genetic diagrams show the possible combinations of gametes
Media attachments
Genetic_diagrams_1 (image/png)
Genetic_diagrams_2 (image/png)
Sperm_X_and_Y_chromosome_diagram (image/png)
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