Round seeds (R) are dominant to wrinkled seeds (r) and yellow seeds (Y) are dominant to green seeds (y). a true-breeding pea plant with round and yellow seeds is crossed to a true breeding plant with wrinkled and green seeds. The F1 progeny are allowed to self fertilize. What is the probability of obtaining a wrinkled, green seed in the F2

compost can be added to topsoil as a:

pesticide

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.