Genetics Review Part 2. If a characteristic is sex-linked, it occurs more frequently in _______. Males. What is a diagram that shows how a characteristic is passed through a family?. Pedigree. What are the X and Y chromosomes called?. Sex chromosomes.
XbRedgreen color blindness is a sex-linked recessive trait . In a family the father is color blind and the mother is a carrier.
Show your work for this cross
What is the genotype for the father?
Out of 4 children, how many girls would be expected to be color blind?
Out of 4 children, how many boys would be expected to be color blind?
It is shorter than the X
Daughters do the original parents have?
Why are there more male children with hemophilia than female children with hemophilia?
Hemophilia is linked to the x chromosome, so males need only 1 recessive gene to get hemophilia while females need both recessive genes
1. What can we say about I-1 and I-2?
2. What is the inheritance?
3. What are the odds that III-5 is a carrier?
4. What is the relationship between I-1and III-4?
5. Which individuals are affected with cystic fibrosis?