3what structural problem prevents adenine from pairing with guanine?
the bases are both short.
they lack phosphate groups.
they lack the deoxyribose group.
the bases are both long.

4. rosalind franklin contributed to the understanding of dna by

producing images of dna molecules using x-rays.
figuring out that dna strands form a double helix.
conducting experiments that showed which nucleotides are

The number of living organisms in a particular area is

How many chromosomes are in a gold fish?

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !