The answer to the question is solstice.
Answer:
Genetic drift (sampling error)
Explanation:
According to the given information, the population under study has a small size and is more likely to be affected by genetic drift. Genetic drift refers to any chance event that leads to random changes in the allele frequencies of a population over time.
It may occur by sampling error that either makes the allele frequency 100% in the population or completely removes it from the population. Sampling error occurs quickly in the small population. The initial frequency of "blood type A" was 3/85= 0.035. Over the time period of 45 years, sampling error during gamete formation and random fertilization removed all the individuals with "blood type A" from the population and reduced its frequency to 0.
Answer:
Ecosystem distribution
Explanation:
<u>The placement of biomes throughout the earth as a result of climatic factors such as temperature and precipitation is referred to as ecosystem distribution.</u>
Biomes generally represents a community of living organisms that are able to tolerate the climate of a place based on shared attributes. For example, all plants in the desert biomes are able to withstand low water.
An ecosystem refers a collection of different communities of organisms that are interacting with one another and their physical environment as a form of system.
Climatic factors such as temperature and precipitation delimits species distribution in an environment. Communities that are able to tolerate similar climatic conditions are placed in the same ecosystem. Hence, we have the <em>forest ecosystem, desert ecosystem, marine ecosystem, freshwater ecosystem, etc.</em>
Mutations acquired by somatic cells are generally only retained by the individual they acquire in as there is no vector by which to transmit the mutation.
<span>Between generations, the only mutations that may be transmitted are those already acquired from a parent, and those that occur within the individuals own germ cells. If mutations in the germ cells result in sperm or eggs that contain that mutation, then they may be transmitted to their offspring. </span>
<span>Red blood cells in all humans and other mammals, though, don't contain nuclear DNA and as such cannot acquire mutations.</span>