BIOLOGY HIGH SCHOOL

Name two circumstances which can result in genetic drift having a significant impact on a population. Explain each.

Answers

Answer 1
Answer: Genetic drift can have a significant impact on a population under various circumstances. Here are two common scenarios and their explanations:

1. **Founder Effect:** The founder effect occurs when a small group of individuals from a larger population migrates or colonizes a new, isolated area. These founding individuals have a limited genetic diversity compared to the original population. As a result, the genetic makeup of the new population is determined by the alleles carried by the founding individuals. Any rare alleles present in the founders may become more common in the new population, while other alleles may be lost. Over generations, this can lead to a significant change in allele frequencies within the population.

2. **Population Bottleneck:** A population bottleneck occurs when a significant portion of a population is suddenly and drastically reduced in size, often due to a natural disaster, disease outbreak, or human intervention. The surviving individuals have a limited genetic diversity, as they represent only a fraction of the original population. As a result, genetic drift can have a pronounced effect on this smaller population. Alleles that were once rare may become fixed (meaning all individuals in the population carry the same allele), and genetic diversity is greatly reduced. This can increase the risk of genetic disorders and reduce the population's ability to adapt to environmental changes.

In both scenarios, genetic drift is driven by chance events rather than natural selection. Over time, the effects of genetic drift can lead to a loss of genetic diversity and potentially impact the population's long-term survival and ability to adapt to changing conditions.

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Hich is a negative result of eating too many lipids?

Answers

eating to much lipids has a bunch of negative effects , it can cause high cholesterol, heart diseases and stroke.

Research indicates that dreaming may be responsible for inspiring creativity by __________.A. stimulating beta waves, which are responsible for waking brain activity

B. rehearsing the daily activities for which one may need preparation

C. allowing for the emergence of old data in useful, new patterns

D. giving the brain long periods of rest where it is not overworked

Answers

Answer: Option (C) is the correct answer.

Explanation:

Dreams are the desires or goals that an individual wishes for himself and wants to achieve.

Therefore, the old data in our mind which is not fulfilled or achieved generally takes the new shape in our mind and we tend to become creative in order to fulfill that desire or data.

Therefore, we can conclude that research indicates that dreaming may be responsible for inspiring creativity by allowing for the emergence of old data in useful, new patterns.

The correct answer for your question is C.

Explain how producers, consumers, and decomposers obtain the energy they need.

Answers

Answer:

Producers obtain energy from sunlight, consumers obtain energy from producers, and decomposers obtain their energy from dead living beings.

Explanation:

Producers produce their food by themselves as they are autotrophic. They obtain mostly their food and energy from the light energy comes from the sun, by the process of photosynthesis.

Consumers are depending on producers for their energy and food. They get energy from producers they eat as food and convert energy from it.

Decomposers get their food or energy by decaying dead living beings or other organic matter. They change these organic matter to energy.
Producers get the energy they need from the sun. Consumers get their energy from the plants and animals that they eat. Decomposers get energy from eating dead plants and animals.

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b.
Ecosystem diversity
c.
Species diversity
d.
Regional diversity

Answers

The right answer for the question that is being asked and shown above is that: "B. Ecosystem diversity." Variation of ecological habitats within a species is characteristic of the type of diversity which is the Ecosystem diversity

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Answers

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A boy who has hemophilia inherited the disorder from his ____________________a. mother
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Answers

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