Sex–Linked Inheritance
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Transcript of Sex–Linked Inheritance
Sex–Linked InheritanceMrs. StewartHonors BiologyCentral Magnet School
Sex – Linked TraitsMale and Female genotypes
Who determines the sex of the baby?
What allele will mom pass on to baby?
Hint: There’s only one possible
What allele will dad pass on to baby?
So, who ultimately determines the sex of baby?
How is sex determined?
X
Y
Not just sex determinationThe X and Y chromosomes
contain the genes that determine male or female sex characteristics
BUT WAIT, THAT’S NOT ALL!
The X chromosome contains alleles for other characteristics
The X-Chromosome
HemophiliaColor blindnessBaldnessDuchenne
Muscular Dystrophy
These X-linked recessive disorders will predominantly affect males. Why?
Pipe Cleaner Babies Activity