Answer:
C. two tetramers of histone proteins
Explanation:
The nucleosome core particle is responsible for packaging DNA in the chromosomes. The protein components that make up the nucleosome core are two tetramers of histone proteins. One of which is composed of two units each of histones H2A and H2B, while the other one is composed of two units each of histones H3 and H4. Thus making up the entire protein component of the nucleosome core.
Answer:
Hydrogen ions
Explanation: pH is the concentration of hydrogen ions (H+) in a given solution. A pH of 1 means there are a lot of hydrogen ions and a pH of 14 means there is a very small concentration if them.
It creates competition for food and other resources.
Answer: Option B (True)
Explanation: The statement can only occur in different populations of the same organism. The two growth strategies happens in different modes.
Firstly, logistic growth occurs when the resources available in the habitat (i.e organism’s niche) are limited to satisfy the whole population and this allows the organisms of the same species to grow rapidly until it reaches the point the resources can circulate, the carrying capacity.
While exponential growth occurs when there's abundance of resources for the population and allows growth of population beyond the carrying capacity, which results to overshoot of population in later stage of growth.
Secondly, in logistic growth population rarely crash but in exponential growth, population crashes due to mortality (often by predation, disease outbreak and etc) when there's overshoot of population beyond the carrying capacity.
Note: Population refers to the total number of organisms of the same species inhabiting a geographical area at a particular time.
Answer:
It is a mutation to the X-chromosome.
Explanation:
Males are more effected by conditions linked the the X-chromosome. Females have an extra X-chromosome, so if the mutation happens they have a backup. Males are easier targets.<em><u> (PLEASE DON"T COPY WORD FOR WORD)</u></em>
