Question 1: Why examining dna is better ?
Examining DNA has a greater interest than examining physical traits because it can determine the genotype of the individual and what are the two alleles that he possesses while examining its physical traits only gives us the phenotype of the individual, which has a lower value than the genotype.
Question 2:
DNA testing is more expensive than examining physical traits, so that in most cases physical features are used to study trait transmission.
There is one case where the determination of the physical trait is sufficient to determine the genotype of the individual: this is when studying codominant alleles such as ABO grouping.
Humans are more highly evolved as the human taxonomic group has undergone more evolutionary changes. If we consider that the first organisms were similar to bacteria, it would mean that existing bacteria have changed very little since life first began. The human lineage however has seen dramatic changes in life form from bacteria to multicellular organisms and so on to progressively more complex forms.
Yeast
(e.g fermentation is the process by which yeast converts glucose into alcohol and carbon dioxide, yeast also makes bread rise)
Answer:
The correct answers are
A.Layer C is younger than layer A.
B. Layer B is younger than layer A but older than layer D.
Explanation:
just took the test and got it right
Second thoughts:
I don't think doing anything in the future will be of use, because we should have already done it, and we didn't, so we have to do it now.
And what we should do is:
To find and actually use and apply new energy sources.
To do more (or less, depending on what the problem is).
To clean the mess we have done / recover the gap in the ozone layer /fix the damage that we have caused.
If you're interested:
I don't think protesting (like we're currently doing) will be of help for two simple reasons:
1. - I don't know for sure, but I don't think politicians care, like or pay attention to protests (unless it's something like the Yellow Jackets).
2. - The time we spend protesting is more valuable than we think. We should leave that aside.
Hope it helped,
BiologiaMagister