Which statement accurately states what happens when a muscle contracts?

a) calcium combines with atp to produce sarcomeres
b) myosin head attach to and pull on a series of actin-binding sites
c) actin produces myosin and atp
d) calcium produces contractions

b. Matings of recessive males (cY) and carrier females (Cc) can not produce the recessive phenotype in females

Explanation:

Recessive (hemizygous) males have the genotype . If they mate carrier (heterozygous) females with the genotype , they will produce the following offspring:

Half of their female daughters will show the recessive phenotype.