1. Sex–Linked Inheritance Mrs. Stewart Honors Biology Central Magnet School

2. Sex – Linked Traits Male and Female genotypes

3. 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?

4. How is sex determined? X Y

5. Not just sex determination The 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

7. The X-Chromosome Hemophilia Color blindness Baldness Duchenne Muscular Dystrophy These X-linked recessive disorders will predominantly affect males. Why?

17. Pipe Cleaner Babies Activity