Answer:
D. when each chromosome is duplicated
The <em>shoulder and hip joints</em> form the only ball and socket <em>joints</em> in the body.
Answer:
A genotype refers to the genetic characteristics of an organism. A phenotype refers to the physical characteristics. For example, having blue eyes (an autosomal recessive trait) is a phenotype; lacking the gene for brown eyes is a genotype.
Explanation: