Fertilization in Sharks Takes Place Internally,unlike in Most Fishes

Q41: Skeleton,muscles,blood vessels and the heart develop from

Q42: In humans,where does fertilization occur?<br>A)In the ovary<br>B)In

Q43: Why are shelled eggs evolutionarily advantageous?

Q44: The portion of the Y chromosome that

Q45: What are the advantages of internal fertilization?

Q47: During the follicular phase of the female

Q48: In ovoviviparity,the eggs,after being fertilized internally,are deposited

Q49: Which sexually transmitted disease if not treated

Q50: Prior to ejaculation,mature sperm are stored where?<br>A)In

Q51: Which part of the sperm cell contains