Which statement is true of crossing over

A - what occurs during prophase of mitosis

B - it allows for genetic variation

C-it occurs only in animals

What percentage of the body's bones is made up of water? a. 22% b. 25% c. 73% d. 83%

What kind of plants did Gregor Mendel conduct his famous genetic experiments on? tulips cucumbers beans peas

Name 2 places on earth we find carbon

Which advance in biotechnology has benefited mankind by providing a DNA catalogue for further research in genetics ans disease prevention

The partner of a pregnant client in her first trimester asks the nurse about the client's behavior recently, stating that she is very moody, seems happy one moment and is crying the next and all she wants to talk about is herself.

Compounds are made up of electrons cells molecules protons

What organelle do both prokaryotic and eukaryotic cells have in common? What does it do?

how does drooping the sticks on the table and transcribing the letters on the sides facing up follow mendel's law of segregation

What properties you would like to see in an ideal preservative use in foods?

Write a description of the ecosystem, including biotic and abiotic factors, in no more than 4 sentences