Today we worked on Punnet squares for Sex-linked traits, incomplete dominance and co- dominance.

Sex-linked traits are connected to the either the X or the Y sex chromosomes.

We will only be going over traits attached to the X chromosome

example

citruscollege.edu

the above shows how sex-linked traits are passed. Because the gene is recessive, males are more likely to have it because there is no dominant gene to mask the recessive. Therefore, males cannot be carriers

Incomplete dominance is a blending of genes, i.e. Red flower+White flower=pink flower

understandingdnaonline.blogspot.com

Co-dominance is both genes expressed, but remain seperate

i.e. Red fur + White fur = White fur with red patches

Next scribe: Jackson