The parts of DNA that provide the code for proteins are the

Which of the following statements about crossing over is TRUE? It occurs only between genes that are heterozygous. It occurs during prophase I and prophase II of meiosis. It occurs only in some chromosomes.

Taste buds Select one: a. can perceive seven basic tastes. b. are replaced approximately every 30 days. c. can only perceive taste if the molecules are in solution. d. can be found covering both the superior and inferior surfaces of the tongue. e.

Two friends are arguing about the structure of the universe. Caleb says that the universe is made of many galaxies that are made of millions of stars and many galaxies that are made of millions of planets.

Cells that have 2 complete sets of dna are called?

Which of the following statements is an example of vegetative reproduction? (A) crossing two different types of vegetables (B) growing a potato from a cubed potato (C) joining the egg and sperm of a tomato plant (D) reproducing simple moss plants

Which microscope uses a probe to map atoms on the surface of a specimen? transmission electron microscope compound light microscope scanning electron microscope scanning tunneling microscope

Explain how body plan and anatomy enables invertebrate to perform the essential functions it needs to survive.

How does the sun provide energy to carnivors

Why do the plants in an area determine the organisms that can live in tha area?

What happens to the air directly above land when the land gets hot?