Summary. Base pairs<span> occur when </span>nitrogenous bases<span>make hydrogen bonds with each other. Each </span>base<span> has a specific partner: guanine with </span>cytosine<span>, </span>adenine<span> with thymine (in </span>DNA<span>) or </span>adenine<span> with uracil (in RNA). The hydrogen bonds are weak, allowing </span>DNA<span> to 'unzip'.</span>
Answer:
1:to allow movement of small molecules in and out of cell
2
Answer:
RpPp x RpPp
Explanation:
For the recessive trait to be expressed, both parents should have at least 1 allele for the recessive trait. Now you can see that both recessive traits were expressed in at least one of the off-springs, this means that both parents had the allele for each recessive trait.
The correct answer is D. Precambrian Time - Paleozoic Era - Mesozoic Era - Cenozoic Era. This is the correct order of the geologic time scale, from oldest to most recent. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
