The punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. the punnett square below examines the chance of offspring having freckles, which is a dominant trait. a punnett square is shown. the columns are labeled upper f and f. the rows are labeled upper f and f. clockwise from upper left the boxes contain: upper f upper f, upper f f, upper f f, f f. based on the punnett square, what is the probability that the offspring will have freckles?

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.

the correct answer is sex-linked recessive.

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a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.