Answer:
A
Explanation:
Somatic cells are diploid (46 chromosomes)
Gamete cells are haploid ( 23 chromosomes)
Answer:
Explanation:the cranial end of the neural tube closes by 24days and the caudal 25-36 days . Defective closure of the neural tube result in neural tube defects (NTDs) . it also depends on the point of the defect , NTDs may also affect the brain and spinal cord.
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
D. To identify any differences between the control group and the
experimental group
