Why are populations with high levels of genetic diversity more stable than populations with low levels of genetic diversity?

A. Populations with high levels of genetic diversity are more likely to have individuals with traits that help them survive if conditions change.

B. Populations with high levels of genetic diversity are less likely to interbreed with other populations.

C. Populations with high levels of genetic diversity are less likely to have high levels of variation in alleles.

D. Populations with high levels of genetic diversity are more likely to have individuals that will undergo natural selection if conditions change.

She should have used another, second fish as a control, to later on compare both results (of a fish with and of a fish without epinerphine).

Therefore, the answer is D.

Hope it helped,

BioTeacher101

I think the answer should be D so she knows what the heart rate was before and what it is later, meaning she should have used another fish as a comparison.

Hope this helps,

:)

It causes a sea breeze

Hi!

Question - How do mutations lead to variation

Answer - B. By producing changes in the genetic code

Why -  "In which can create entirely new alleles in a population"

By producing changes in the genetic code, mutations lead to variation. The correct option is B.

A mutation is a transition in an organism's DNA sequence. Mutations can occur as a result of errors in DNA replication during cell division, mutagen exposure, or viral infection.

As they result in changes in the genetic code, it leads to variation.

Thus, the correct option is B.

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In a single-celled organism, mitosis is used primarily for reproduction. It is a process where the cell divides to create two identical cells, which serve as independent organisms.

In a single-celled organism, mitosis primarily serves the purpose of reproduction. Mitosis is a process in which a cell divides to produce two genetically identical cells. Unlike multicellular organisms where mitosis typically contributes to growth, development, and repair, single-celled organisms use this process to create new, independent organisms. In these organisms, since there are no multiple cells to grow or repair, mitosis solely serves as a means of reproduction.

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Hi,

There is one of each type of unconformity in this diagram. Name at least one of each of them by indicating the layers that they are between.

Nonconformity exists between most metamorphic and sedimentary rock.

Angular unconformity exist mostly with sedimentary rock.

Disconformity exists also between sedimentary rock

In geology, unconformities are contacts between two rock layers that indicate periods of stopping, erosion, and resuming of deposition. Nonconformity occurs between sedimentary and igneous or metamorphic rock, Angular unconformity between new strata and older, tilted or folded strata, and Disconformity between two parallel sedimentary layers with a time gap.

In geology, an unconformity is a contact between two rock layers that are not parallel to each other. They indicate a period of geological time when deposition stopped, erosion removed previously formed rocks, and then deposition resumed. There are three main types of unconformities - Nonconformity, Angular unconformity, and Disconformity.

A Nonconformity occurs when sedimentary rock sits on top of igneous or metamorphic rock. For instance in a diagram, this could be between layer C (sedimentary) and layer D (igneous).

Next, an Angular unconformity happens when new strata lies on top of older, tilted, or folded strata. For example, this could be between layers B (tilted) and C (horizontal).

Lastly, a Disconformity refers to a gap in time between two parallel layers of sedimentary rock, perhaps between layers A (older) and B (younger) if there is a gap in time.

Remember that these are all case-dependent and the types and structures would depend largely on the specific diagram provided.

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Umami, often translated as savory, is one of the five primary tastes. It is represented in protein-rich foods due to the activation of G protein-coupled receptors by amino acid L-glutamate.

The Umami Taste is described as savory, brothy, and meaty.

It is one of the five primary tastes that humans can perceive, along with sweet, salty, sour, and bitter.

Umami is activated by the amino acid L-glutamate which is commonly found in protein-rich foods, thus providing a savoury taste often found in meaty dishes.

This savory taste enhances the flavor of certain foods and signifies the presence of essential amino acids.

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Light energy from the sun is captured by the chlorophyll

or

phase of photosynthesis where light energy is converted to chemical energy in the form of ATP and NADPH; results in the splitting of water and the release of oxygen; takes place in the thylakoid membranes

Answer:

carbon dioxide,water

energy

Explanation:

those  are the answer

A particular single-celled organism uses radiant energy to fix carbon as sugars. This organism generates ATP by breaking down sugars through a process that uses oxygen. This organism is aerobic autotroph.

Autotrophs produce their own food from the substances available in their surroundings using light through photosynthesis or chemo-synthesis.

Answer

This organism can be classified as aerobic autotrophs

Explanation

Autotrophs are organisms that make their own food .They gather energy from the sun or chemical substances and convert it into sugars that could be utilized by other animals. Energy is transferred from autotrophs to consumers while eating then to carnivores.

A. In prophase I, tetrads of homologous chromosomes form and crossing over occurs

hope this helps :)

Answer:

The correct answer is "In prophase I, tetrads of homologous chromosomes form and crossing over occurs".

Explanation:

Mitosis is a type of cell division at which one parent cells produces two daughter cells with identical genomic content and with the same number of chromosomes as the parent. On the other hand, meiosis is a type of cell division at which four daughter cells are produced with half the number of chromosomes respect to the parent cell. The major difference between prophase I of meiosis and prophase of mitosis, is that in prophase I of meiosis, tetrads of homologous chromosomes form and crossing over occurs. The tetrads of chromosomes are the ones that later will make the genomic content of the four daughter cells, while the crossing over is what allows the genetic variations of the sexual cells.

Nervous system for an animal is the part of an animal's body that coordinates its behavior and transmits signals between different body areas.The sensory system relies on specialized sensory receptor cells that transduce external stimuli into changes in membrane potentials.

A theory that stands the test of Tim sand becomes the basis for a field of study is paradigm

Answer:

The correct answer will be- paradigm

Explanation:

A paradigm is a conceptual view of the world which is composed of classic experiments, trusted methods and the theories.

A scientific paradigm is accepted which explains the natural phenomenon and later its scope is expanded by new theories, data and a new measure of standards.

In the given question, since it becomes the basis of the field indicates that it has scope to extend with time with new theories and data therefore, the correct answer is a paradigm.

The answer is; D

Radioactive waste poses a serious challenge to the environment. Any leakage of the waste is risky because the radioactivity can flow up the food chain and it also takes time for it to decay and become less harmful. Therefore, its effect can be felt over many generations. Therefore, safe storage of radioactive waste is a challenge (and can be very expensive) and a deterrent for pursuing the potent energy source.

An Area along an active fault that has not had recent earthquake activity

An area along an active fault

The right answer is B. back pain from the compressed nerves

Narrow cervical canal symptoms can range widely from no symptoms to gait and balance disorders to radiculaglia when there is foraminal narrowing associated with central narrowing. Discrete balance disorders may be early signs of myelopathy (posterior cords). Later, the patients suffer from proximal weakness and paresthesia of the four limbs, as well as disorders of the fine motor skills of the hands (do not manage to close buttons of shirt, difficulties with the writing, etc., on reaching the lower motor neuron). In more advanced stages, gait disturbances and even later sphincter control disorders may occur (upper motor neuron involvement).

The possible genotype of individual II.3 is AA, and its phenotype is unaffected. Thus, the correct option is C.

Genotype may be defined as the ultimate combination of alleles of those genes which are selected for a specific study.

Both the parents are the carriers of the cystic fibrosis disorder, so, both of them have the genotypes of Aa, but the disorder is autosomal recessive, so it occurred when the genotypes are aa.

The parents with genotype Aa produce offspring with the genotypes AA, Aa, and aa. In which AA must be unaffected and normal, Aa must be unaffected but the carrier and aa must be affected by the disorder.

Therefore, the correct option for this question is C.

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The answer is community.

Final answer:

A food chain is a part of a larger ecosystem's food web, which represents intricate feeding relationships. The food web's interconnectedness ensures ecosystem stability by allowing energy to flow through multiple pathways.

Explanation:

This food chain is one part of a food web within an ecosystem. A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another, beginning with a producer and typically ending with decomposers. However, in reality, many organisms feed on more than one species, making the flow of energy and nutrients more complex than a single food chain can represent. This complexity is captured in a food web, which illustrates the interconnected network of food chains and the multiple feeding relationships among organisms in an ecosystem., improving stability and resilience to changes.

A food web encompasses numerous food chains and demonstrates the vast array of feeding interactions that occur in an ecosystem. For example, in a grassland ecosystem, grass (producer) might be eaten by a number of different herbivores (primary consumers), which in turn are preyed upon by various carnivores (secondary consumers), and when these die, decomposers break them down.

Answer:

Options (2), (3), and (4).

Explanation:

Plant cells are eukaryotic cells, in which membrane-bound organelles, such as nucleus and mitochondria are present. Each plant cell is covered by a cell wall that provides shape and protection to the plant cell. A plasma membrane is present under the cell wall which separates interior of the cell from external environment.

Plant cells also possess chloroplasts that help in photosynthesis and large central vacuoles that act as storage organelles and store food. On the other hand, centrioles are absent in plant cells.

Thus, the correct options are 'options (2), (3), and (4).'

Plant cell characteristics include having cell walls and plasma membranes, large central vacuoles, and chloroplasts. They do not have cleavage furrows and centrioles during cell division, which are more characteristic of animal cells.

Plant cells display key characteristics that set them apart from animal cells. Regarding the choices provided:

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This is true, asexual reproduction involes the exact copying of a parent to its offspring.  In sexual reproduction, two parent's DNA is intermixed, thus giving new DNA.  Since there is only one parent in asexual reproduction, there is no chance of variability.  The only time the DNA may be different is during a mutation, which is not caused during the reproduction.

The answer is true.

The answer is anaphase 1.

In biology, the law of segregation explains how the offspring of parents with similar characteristics sometimes have offspring with a different characteristic.

B. Many stars and solar systems make up galaxies and many galaxies make up the universe.

transparent, expanding at an accelerated rate, stars produce heavy elements

Based on the information given above, the changes that are most likely to occur in the ecosystem are given below:

An ecosystem may be defined as a place or area where members of different species live and interact with one another for the purpose of their requirements such as food.

When the eagle population reduces, it gives the population of snakes to grow or increase because of lack of predation.

When the population of snakes increases, it may negatively impact the frog, and hence their population declines.

Therefore, it is well described above.

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In biology, cellular communication is a term used to determine distinct kinds of methods of communication among the living cellulites. Of these intercellular communication signifies the communication between the cells. In this kind of communication, membrane vesicle trafficking plays an essential role in both humans and animals.  

On the other hand, intracellular communication signifies towards the communication of the organelles in order to sustain cellular homeostasis.  

this is the  Troposphere

Answer:

The correct answer option is D. Troposphere.

Explanation:

There are four main types of atmospheric layers on the Earth: troposphere, stratosphere, mesosphere, thermosphere.

The lowest atmospheric layer of the Earth is called Troposphere. It is the layer where all the weather conditions take place and it extends from the surface of the Earth to almost 12 km upwards. We all live in this layer and it has all the air that we breathe in.