"Lichens and mosses grow slowly on newly formed land, followed by grasses, shrubs, and trees" is the one among the following choices given in the question that <span>best describes the changes that take place in an ecosystem during primary succession. The correct option among all the options given in the question is the first option.</span>
Answer: A change in allele frequencies caused by random events
Explanation :<u>Genetic drift refers to a process which occur due to sampling error from preceding generations that lead to a change in allele frequency by chance alone within a population.</u> It is a random process which leads to large significant changes within a population over a short period of time. The rapid changes are due to increasing inbreeding coefficient s and homozygosity from the removal of alleles.
It is peculiar to a population which is synonymous with regular cycle of extinction and recolonization. Therefore, together with evolution, mutation and migration, <u>it is one of the driving mechanism of EVOLUTION.</u>
It is caused by;
Static or recurring small population sizes,
"Bottlenecks” form of population, that is drastic reduction in population size;
Repopulation from a small number of individual-FOUNDER EVENTS.
<u>Measurements of Genetic Drift
</u>
The magnitude of genetic drift within a population depends on the effective population size for the population.This is represented as Ne. It is a theoretical number use to quantify the number of genetically distinct individuals that contribute gametes
The compound ammonia given by fish is alkaline
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Answer:
D.This process requires the interaction of several different cellular structures,
Explanation:
We don't have the information above. However, this process occurs in all cells, and it requires energy. Semi-conservative refers to the fact that, during DNA replication, each new molecule of DNA is made up of one strand of the original DNA molecule and one strand of a new molecule.
The synthesis of proteins from the information in an mRNA molecule does require several structures in the cell, including the nucleus, ribosomes, endoplasmic reticulum and Golgi apparatus.
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