MATH WITH MISS J
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Sex Linked Inheritance
Genes that are carried by either sex chromosome are said to be
sex linked
.
How is sex determined in the first place?
What is the chance of having a boy over a girl? Complete Page 40 in your workbook to find out.
Sex linked conditions (X Linked)
X-linked dominant disorders are caused by mutations in genes on the X chromosome.
Genes carried by the X chromosome.
More common than Y-linked conditions.
X-linked Dominant and X-linked Recessive.
X-linked Recessive
-
Females (XX) the second X can mask the affect.
Males (XY) the condition always presents.
Why?
X-linked Dominant
-
A mutation in one of the X chromosomes is sufficient to cause the disorder.
Complete Page 42-43 in your workbook.
Y Linked
Y-linked disorders are caused by mutations in genes on the Y chromosome.
Genes carried by the Y chromosome.
The Y chromosome is very small and has less genes than the X chromosome.
Passed from father to sons: Y-linked genes don't occur in females but it occurs in all sons of an affected male.
Why?
Complete Page 41 and 44 in your workbook.
If you have completed Pages 40 - 44 then revise your Incomplete and Co Dominance Questions.
Click to discover the different ways in which a genetic condition can be inherited?
Home
Chemistry
Contact
Year 9
Feedback
Chemistry
>
Introduction
Periodic Table
Electron Shells and Configuration
Bonding
1-3
Acids and Bases
Acid Reactions
Chemical Formula
Chemical Reactions
New Page
Year 10
Feedback
Cell Structure
DNA
Cell Cycle
>
Visual
Video
Cancer
Cell Cycle Quiz
Mitosis
>
Key Terms
Visuals
Video
Mitosis
Mitosis
>
Prophase
Metaphase
Anaphase
Telophase
Animal V. Plant Mitosis
Mitosis V. Meiosis
Mitosis Quiz
Meiosis
>
Crossing Over
Genetic Material
Genetics
>
Punnet Square
Random Assortment
Entrance Quiz
Incomplete V. Co Dominance
Revision 1
>
Quiz 1
Sex Linked
Pedigree
Pedigree Quiz
Mutation
Epigenetics
Evolution
Topic Test Revision
Year 11
Feedback
Cell Cycle
>
Cell Cycle Quiz
Video
Visual
Mitosis
>
Prophase
Metaphase
Anaphase
Telophase
Mitosis Quiz
Cancer
Math
Multiply Fraction
Divide Fraction
Creating Pattern Rules
>
Matchstick Patterns
Formulas
Angles
Statistics
>
Statistical Process
Data Type
Graph Type
Range, Mean, Mode, Median
Form
Tutor
Math
>
Trigonometry
Linear Relationships
Measurement
Scientific Notation
Scale factor
Probability
Statistics
>
Density
Science
>
Test Notes
Radiation
Half-Life Calculations
Human Systems
Energy
>
Light Energy
Convex and Concave Mirrors
Endocrine
Nervous
Pathogen
Immunity
Resources
Quiz
>
Science