If the cystic fibrosis allele protects against tuberculosis the same way the sickle cell allele
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- About ½ her cells will express one allele, while the others express the other allele. Section 15:3 -Linked genes tend to be inherited together because they are located near each other on the same chromosome. Each chromosome has hundreds or thousands of genes (except the Y chromosome).
•Disorder is price paid for resistance to some other disease EX: Sickle cell heterozygotes resistant to malaria parasite Cystic fibrosis heterozygotes resistant to typhoid Changes in Vitamin D receptor protects against tuberculosis (may increase osteoporosis) SEX LINKED GENES: