Answer: Single cell organisms absorbed harmful gases from the air when they first formed
Explanation:
The answer is d
Both b and c
<span>The correct answer is B: many eggs may have been released multiple menopause. That is because you can't enter labor or even become pregnant if you're in menopause. This couldn't have happened because menopause is the end of menstruation and the end of female fertiliy. When it begins, the female can't have kids anymore.</span>
The answer is B I honestly pretty sure about that cause it’s in sex cells so it has to mutate in skin cells
Answer:
Exons.
Explanation:
In mRNA maturation and processing, a complex called a splicesome essentially "cuts out", if you will, non-coding parts of the DNA sequence to be translated. The parts that are cut out are called "introns", and the parts that are left over that code for a protein sequence, are called "exons". Careful with the terminology. It seems counterintuitive that exons are the ones that stay (exon = exit? NO.) and introns (in, as in, stays in? NO.) are the ones that are cut out of the mature mRNA. Perhaps you can remember that the terms seem to be the opposite, that's how I remember it. Alright, good luck with all of this.