A population of beetles in which some individuals are blue and some individuals are green evolves by chance because more alleles of one color are transmitted to the next generation than alleles of the other color. This mechanism of evolution is known as Genetic drift.
- Genetic drift is the arbitrary change in the frequency of a gene variant in a population. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity.
- Genetic drift is a random or chance process that can produce significant population changes quickly.
- Recurringly small population sizes, drastic population size reductions known as "bottlenecks," and founder events, in which a new population is created from a small number of people, all contribute to random drift.
- For example, a population of rabbits having brown and white fur, with the dominant gene being white fur.
- Genetic drift may result in the eradication of the whole white population, leaving only the brown population.
learn more about Genetic drift here: brainly.com/question/14504862
#SPJ4
Answer:
b) from a region of high pressure to a region of low pressure
Explanation:
Blood flow is measured in blood volume per unit time. It is the movement of blood through an organ, tissue or vessel. It is initiated when ventricles in heart contract leading to its ejection at high pressure. Major arteries receive this blood and they further transport it at high pressure to smaller arteries, arterioles and capillaries. Hence arteries have thick walls to withstand this pressure. The pressure decreases when blood reaches to veins hence their walls are not that thick. Hence, blood flows from a region of high pressure to a region of low pressure.
Answer:
1/128
Explanation:
In a diploid individual, 2ⁿ possible gametes can be produced, where <em>n</em> is the haploid chromosome number.
From those possible gametes,
- is the number of gametes that will contain maternal chromosomes only
- is the number of gametes that will contain paternal chromosomes only
- is the number of gametes that will contain a combination of both maternal and paternal chromosomes.
The probability that an individual spore will contain a set of chromosomes all of which came from the male gamete will be:
<h2>
</h2>