How does someone become a carrier for sickle cell anemia? A. They inherit one copy from one parent

B. They inherit two copies from two parents

C. It's completely random

explanation:

the sequence of amino acids in a protein determines its function. the dna sequence of a gene determines the amino acid sequence of the resulting protein. thus, any changes in dna sequence can result in changes in protein function. this is called a mutation.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.