BIOLOGY HIGH SCHOOL

How do natural disasters contribute to genetic drift?

Answers

Answer 1
Answer:

Final answer:

Natural disasters can lead to genetic drift by causing changes in population size and composition. They can result in the loss of genetic variation, founder effects, and bottleneck effects.

Explanation:

Natural disasters can contribute to genetic drift by causing significant changes in the population size and composition of a species. These events can lead to a random loss of genetic variation by causing the death of certain individuals or wiping out entire populations. For example, in a wildfire, individuals with certain genetic traits may be more vulnerable to the fire and are therefore less likely to survive and reproduce, leading to a decrease in the frequency of those traits in future generations.

In addition, natural disasters can also result in founder effects and bottleneck effects. A founder effect occurs when a small group of individuals become isolated from the larger population and establish a new population. The genetic diversity of this new population is greatly reduced compared to the original population, leading to genetic drift. Similarly, a bottleneck effect occurs when a large population undergoes a drastic reduction in size, reducing genetic diversity. Both of these effects can be caused by natural disasters, such as earthquakes or hurricanes.

Overall, natural disasters can have a significant impact on genetic drift by influencing the frequency and distribution of genetic traits within a population.

Learn more about Genetic drift here:

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Answer 2
Answer:

Answer:

big changes in environmental conditions can sometimes cause large changes to the gene pool of a species

Explanation:

hope this helps!

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Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits Eliminate D) presence of a vertebral column

Answers

The answer is; C

Most often some ancestral characters are preserved in an organism's development hence can be used to study evolutionary relationships. One of these features is the gill slits in embryos. These have been used to postulate that all land organisms, that exhibit gill slits in their embryonic development, emanated from a common fish ancestor. In humans, these gill slits later develop in the pharyngeal.

Can two species have the same niche

Answers

Of course they can! They almost all the time do

Answer:

The competitive exclusion principle tells us that two species can't have exactly the same niche in a habitat and stably coexist. That's because species with identical niches also have identical needs, which means they would compete for precisely the same resources.

Explanation:

Heat passes through liquids by the process of

Answers

Heat passes through liquids by the process of convection. 

Hope this helps !!! ^_^ !!!

A student plans to measure the circumference of a balloon at various temperatures to determine how temperature affects the volume of a gas. What is the independent variable in this experiment?

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I think the independent variable is the temperature, while the dependent variable is the size of the balloon. The factor that is held constant is the amount of air in the balloon. An identical balloon kept at the original temperature. Independent variable in an experiment is the variable that the experiment plans to change while the dependent variable is the variable whose value depends on the independent variable. 

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Answers

A forest fire would trigger secondary succession

In the female body, each egg is surrounded by a _____________ which breaks open when the egg is mature.a. ovary
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Answers

The correct answer is the ovarian follicle. In the female body, each egg is surrounded by an ovarian follicle which breaks open when the egg is mature. The ovarian follicle is the one responsible in secreting hormone during the menstrual cycle. 
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