If you go on mc3.edu/admissions/applying-to-mccc/testing-and-assessment/assets/biology-placement-test.pdf page 11 it will tell you all the answers to your questions....
Answer:
No, not all genetic change is adaptive.
Explanation:
This is because genetic changes happen in many ways and this can be adaptive or not.
The main form of genetic change happens through genetic mutations, and these mutations are not always adaptive.
One might think, for example, of a river polluted with a chemical reagent that causes mutations in the scale genes of the local fish population, mildly damaging the way they swim. Despite being a nonadaptive genetic change of fish, they have continued to reproduce so that this change is part of their population.
Although this happens, it is important to note that this rarely happens. Since natural selection ends up selecting the most suitable in the long run.
- TGA (opal)
Answer:
Explained below
Explanation:
A mutation in a gene that results in total loss of the normal function of the gene product encoded by that gene, resulting in a Null phenotype.
Changes in DNA sequence are termed as nonsense mutation that introduce a stop codon, resulting in a non functional protein. This terminology results stop codons have also worked as nonsense codons.
There are three different stop codon-
In RNA
- UAG (amber)
- UAA (ochre)
- UGA (opal)
In DNA
- TAG (amber)
- TAA (ochre)
- TGA (opal)
Answer:
I believe by increasing the cell (the amount of cells)
Explanation:
C planting more vegatation
