How do identical twins form?

A. A fertilized egg splits in two.

B. Two eggs are fertilized by one sperm.

c. Two eggs are fertilized by two sperm.

D. Two sperm fertilize an egg

When energy is converted from one form to another, a tiny amount is inevitably lost. a. True b. False?

To increase chances for a successful organ transplant, the person receiving the organ should be given special medications. the purpose of these medications is to

Cancer is a disease caused by cells that divide uncontrollably. Scientists are researching drugs that inhibit DNA polymerase as potential anti-cancer drugs. Why would these drugs be useful against cancer?

The variation associated with meiosis is the result of select one: a. crossing over b. chromosome condensation in prophase i c. b and c d. fertilization e. random chromosome arrangement at metaphase i

What Type of Mutation can not occur in a child after birth?

During photosynthesis, oxygen is converted to carbon dioxide. True Or False?

What characteristic of Charales would enable them to survive a dry spell? sperm with flagella phragmoplasts sporopollenin chlorophyll a

Many Head Start programs have a community aide who A. tutors at-risk children in the home. B. gives families the money they need to survive. C. connects families to community resources they need. D. represents families at family/teacher conferences.

Stranded on an island, you have two sources of water to drink: salty ocean water and contaminated fresh water. explain your choice of drinking water and indicate why your selection is the best choice.

How are a hypothesis a prediction and an experiment related