What is the ultimate source of genetic variability?

A. Gene flow

B. Mutations

C. Genetic drift

D. Non-random mating

This is an organism that obtains its energy from inorganic substances or from the sun.

Chemist runs a thin-layer chromatography (tlc) plate and, after development, notices that all of the spots are at the upper region of the tlc plate and are very close together. Select the most likely cause of this result.

How much salt Nacl is in the average adult human body

What type of skeleton (ENdoskeleton, EXoskeleton, or None) do sponges have

What landform is the result of magma hardening in a volcano's pipe?

1. Synthesize Information How do you explain to the horse owner why this foal was born with OLWS while two previous foals were perfectly healthy? What would you tell the new parents of the baby girl about their prospects for having more children?

What organelle is the control center for the cell and holds the DNA

The primary structure of a protein refers to the sequence of amino acids that are linked together in a long chain. Which of the following common items would best represent the primary structure of a protein? O A.

How many chromosomes do humans have? how many copies in normal cells? How many pairs? How many copies in sex cells?

How many times has blastopore fate changed over the course of evolution? -o times -1 time -2 times - multiple times