Density is important because it affects whether objects will float or sink. it is an important property to consider when building things like ships or a hot air ballon.
Answer: Under normal ambient conditions water is less dense as a solid than as a liquid, so ice floats on water. Most materials are more dense as solids.
Explanation: When water freezes, the molecules do not stack into a close-packed structure. They form a relatively open, honeycomb-like arrangement.
Answer:
the correct answer is B
Explanation:
Base analogs are structurally similar chemical mutagens of one of the Nitrogenours Bases (adenine guanine cytosine or thymine). The analogs compete for the place of normal nitrogenous base during replication and induce a base substitution mutation in 1st round of replication.
E: 5-bromouracil incorporated in to the place of thymine and base pair with guanine, while thymine base pair with adenine according wobble base pairing rule. In the subsequent round of replication guanine will base pair with cytosine leading to base substitution mutation and 5-bromouracil might be excised leading to frame shift mutation.
2- aminopurine an analog of adenine can base pair with thymine or cytosine. (according wobble base pairing rule adenine does not base pair with cytosine).
