It is true, it does release hydrogen ions in a water base.
Answer:
Results in the remodeling of chromatin that can activate or inhibit gene expression
Explanation:
Alteration of histones by addition of methyl and acetyl groups are examples of chromatin remodeling complexes. These allows for the remodeling /alteration of the chromatin state to allow transcriptional machinery and other cellular processes to have access to the DNA. This way, they can either activate or inhibit gene expression. Methylation patterns inhibits gene expression while acetylation activates gene expression and so on.
Answer:
B
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Answer:
A step that is not part of natural selection is people select which individuals breed and which ones do not.
Explanation:
Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.
As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that <u>people cannot determine which individuals breed</u>.
Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.
<em>The other options do form part of natural selection, since they are based on the three premises of this process:
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- <em>Inheritable characteristics.
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- <em>Genetic variability.
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- <em>The variability of characteristics influences reproduction and survival.</em>
The differences between the two groups of the same species may be influenced by their genetic differences (such as allelic frequencies) and their environment
Individuals of the same species may differ in the following characteristics;
- Fertility – on the population may a higher frequency of recessive alleles that reduces their rate of reproduction
- Metabolism – this also may be determined by the type of allele
- Physical appearance – the influence of the environment in which the population habits on the genotypes of the population
- Behavior – this is mostly determined by the environment.
- Learning - this is also determined by the environment
