Asexually reproducing animal populations are rare, but they typically consist of females who produce female offspring, so all offspring can produce more offspring. By contrast, half of the offspring of the sexual reproducers are male and cannot produce offspring. Thus, a clonal population of females can expand much more quickly than a population of sexual reproducers.

Potamopyrgus antipodarum is a species of freshwater snail that has spread far beyond its native New Zealand. Some populations of these tiny snails reproduce sexually, and other populations reproduce asexually. Huge asexual populations are now disrupting ecosystems all over the world, particularly where the water is contaminated with phosphorus. Fertilizers and detergents contain phosphorus, so agricultural runoff and other forms of water pollution are common in these regions. Like most animals that cannot reproduce sexually, the asexual snails have at least three sets of chromosomes; like most sexual organisms, the sexual snails have two. Explain why sexually reproducing snail populations predominate in regions where the water is unpolluted.

Answers

Answer 1

Answer:

Because of the fact that Snails cannot survive in nasty water.

Explanation:


Related Questions

Q1: What two requirements must food meet in order to be considered a
food molecule

Answers

Answer:

it would be

Explanation:

i hope this helps

How might pandemic flu impact the functioning of society?
Schools may need to be closed
Vaccine manufacturers may shut down.
Workers may need to use their sick leave time.
Healthcare facilities may become overwhelmed.

Answers

Answer:

D.  ?

Explanation:

Kinda whats going on rn lol

Hope this helps!

-BB

Answer:

Health facilities may become overwhelmed. If this is multiple choice picking I would also choose "Schools may need to be closed" and "Workers may need to use their sick leave time."

Explanation:

It's a bit self explanatory, no?

List the characteristics of plants​

Answers

Answer:

Plants are multicellular eukaryotes. They have organelles called chloroplasts and cell walls made of cellulose.

Plants also have specialized reproductive organs.

Almost all plants make food by photosynthesis.

Life as we know it would not be possible without plants.

What does dilation, and therefore increased permeability, of the capillaries during the inflammatory response allow to happen

Answers

Answer:

During the inflammatory reaction and cytokine / cell diffusion, a chemical compound called nitric oxide, known as NO, is released. This chemical compound increases the permeability of the vessels, that is, the separation between the endothelial cells of the vessels to promote diffusion, inflammation and diapedesis.

Explanation:

Another factor that promotes permeability of the vessels are pro-inflammatory cytokines and chemicals released by antigen-presenting cells.

A type of cell division that results in two daughter cells that are exactly the same as the original cell is _________.
A. osmosis
B. mitosis
C. diffusion

Answers

B mitosis :) I hope this helped

What amazing thing can plants do with carbon dioxide and water molecules? How?

Answers

Plant Inhalation and Exhalation
Once the carbon dioxide enters the plant, the process begins with the help of sunlight and water. During this process, the plant combines carbon dioxide with water to allow the plant to extract what it needs for food. The plant uses sunlight as energy to perform this chemical reaction.

Answer:

In the process of photosynthesis the plants make their own food by using carbon dioxide, water, sunlight and soil.

The energy from sun light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen.

Explanation:

Hope this helps you

Crown me as brainliest:)

A mutation has occurred that results in a drastic reduction in mRNA transcription from very high levels to low levels. What region is likely responsible?

Answers

Answer:

Enhancer region

Explanation:

An enhancer is a cis-regulatory DNA region that binds to transcription factors in order to stimulate transcription. Enhancer regions are localized both upstream and downstream of the gene whose transcription regulates, at a variable distance ranging from 1 to 100 kilobases (kb) from the transcription start site. The first enhancer to be identified was found in an intron of the immunoglobulin gene. Conversely, a silencer element is a DNA region that binds to proteins known as repressors in order to suppress transcription.

starch and water molecules in potato cells are stored in what organelle?​

Answers

The organelle that the starch and water molecules would be stored in are amyloplasts .

Potatoes synthesize and store starches in organelles is called amyloplasts.

What is amyloplast?

Amyloplast is a type of plastid that formed as well as store starch. They are commonly found tubers (potatoes) and bulbs. Amyloplasts are also helping plant roots grow in a downward direction.

So we can conclude that Potatoes synthesize and store starches in organelles is called amyloplasts.

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(PLZ help me ill give brainiest)
Which of the following explains why anatomy and physiology are closely related?

A. Biological systems are organized in a hierarchical manner.
B. These disciplines have implications in diverse medical and scientific fields.
C. Humans are complex living beings, with multiple organ systems required for human life.
D. Structure and function are interdependent.

Answers

The most probable answer is answer choice B as it is the only answer that clearly states it is speaking about more than one discipline

PLEAS HELP!!! Clara had to choose between making an animal or a plant cell. Which type of cell does her model represent?
a. plant
b.animal

Describe the function of two structures identified in Clara's cell, other than the mitochondria.____

Identify two cell structures that are missing from Clara’s model. ____

Describe the function of each cell structure you identified in the question above. ___

Answers

B. Animal cell, I believe so because of the shape of the cell and it does not clarify if it has a cell wall, if it has a cell wall and mehran then it's a plant cell if it only has a cell membrane in them it's an animal cell

Clara's model represents an animal's cell. The Golgi body and ribosome are missing. Hence, option B is correct.

What are the functions of different cell organelles?

The gel-like substance that fills a cell is called cytoplasm. It serves as a catalyst for chemical reactions. It offers a foundation for other organelles to function within the cell. A cell's cytoplasm is where all of the processes for cell division, growth, and replication take place.

The nucleus' principal jobs include storing the cell's DNA, preserving its integrity, and assisting with transcription and replication. The main function of the nucleolus is to facilitate and assemble ribosomes. The plasma membrane is the outer covering of the cell, which provides it protection and allow the transportation of nutrients and other essential material into the cell.

In Clara's model cell wall is absent. Hence, option B is correct.

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A plant has 3 parts, parallel veins, no main tap root, and the endosperm is separate.
Is this plant a monocot or a dicot?

Answers

monocot :) is the answer, good luck!!

15. A man with normal color vision marries a woman with normal color
vision. BUT Mom's father was colorblind, and she is a carrier. If this couple
has a son, what is the chance he is colorbling?
*
0% of boys are colorblind
25% of boys are colorblind
50% of boys are colorblind
100% of boys are colorblind

Answers

Answer:

0%

Explanation:

Colorblind is usually a recessive trait therefore there is no situation, unless the father has a colorblind gene, that the child would be colorblind.

the release of.one phosphate group from ATP powers the reactions in the cell. Which phosphate is the one released from ATP

Answers

Answer:

Hey sorry, Considering this was ages ago did you finish this? what was the answer? Its too late to comment but can you rate the answer (like if it's the first option [which is #2] rate it 2 stars or if its C rate this 1 star, so on and so forth)

Explanation:

Sorry

A phosphate that is released from ATP is the third one. Thus, the correct option for this question is D.

What is ATP?

ATP stands for Adenosine triphosphate. It may be defined as a type of high-energy compound that significantly delivers energy to the cells for the accomplishment of metabolic activities. Therefore, it is known as the energy currency of the cell.

The removal or elimination of the phosphate group from ATP to yield ADP significantly liberates energy. This released energy is captured or consumed by the cells of living organisms in order to derive energy for the completion of metabolic activities. While the adjoining of these phosphate groups significantly required energy.  

Therefore, the third phosphate is the one that is released from ATP. Thus, the correct option for this question is D.

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If a more concentrated initial solution of sodium bicarbonate was used in beaker C, would it require more or less bicarbonate to neutralize the acid? Why?

Answers

Answer:

It would require less bicarbonate to neutralize the acid.

Explanation:

Sodium bicarbonate NaHCO3 is a, partly soluble sodium salt that decomposes in water to form a weakly basic buffer solution. It dissociates in water resulting in bicarbonate anions HCO− , sodium ions Na+ and H+.

2 NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g)

Buffer solutions exist in equilibrium. In a  solution with a strong acid and the conjugate base react, while the other carbonate ions dissociate to form carbonic acid, shifting the equilibrium of the solution back towards a balanced state.

HA  H+ + A-

Due to its buffering ability i.e. how well it maintains equilibrium, less bicarbonate would need to be added later on to neutralize the acid.

Less quantity of bicarbonate is needed for the neutralization of acidic solution.

Function of bicarbonates

It require less bicarbonate to neutralize the acid because of its concentrated solution. If a more concentrated solution of sodium bicarbonate is used to neutralize the acid, lower quantity of it will be enough to neutralize it. Sodium Bicarbonate acts as a buffer which is commonly used for maintaining the pH of the solution.

Effect of Buffer

It acts as a base when it is put in the acidic solution so helps in neutralizing the solution so we can conclude that less quantity of bicarbonate is needed for the neutralization of acidic solution.

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What is a list of combination biomolecules?

Answers

Answer:

Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites and natural products. A more general name for this class of material is biological materials.

Explanation:

google

The _____ temperature and the _____ pressure on Earth's inner core force it to remain a solid. (4 points)

Answers

Answer: high and low

Explanation: high  and low

Answer:

Low and high

Explanation:

Hypertonic means...
A. High in solute
B. Low in solute
C. Equal in solute
D. Hyperactive

Answers

Answer:

D Hyperactive

Explanation:

Answer:

A.High in solute

Explanation:

Ok,In the reasoning of the word hyper,this brings up a conclusion that it means something high as in raised level thus the term being made to be hypertonic then it refers to the whole term meaning it is a solute of higher or high solute concentration.

Why is it important for the daughter cells to divide a second time In meiosis?

Answers

Answer:

The second time the daughters cells divided haploid cells form and then migrate to other haploid cells in the process of fertilization.

Explanation:

Daughter cells divide a second time In meiosis because it creates cells that are destined to become gametes.

What is Meiosis?

This is the type of cell division common in reproduction and gamete production and produces four unique daughter cells.

The daughter cells divide twice because it creates cells that are destined to become gametes as its union during fertilization would result in offspring with twice the normal number of chromosomes.

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please help i give 48 points !!!which correctly lists the three layers in which water moves easily
A: ROCK, CLAY ,GRANITE
B: SOIL,ROCK,ORGANIC LAYER
C: CLAY,ORGANIC LAYER, GRANITE
D: GRANITE, ROCK, SOIL

Answers

soil, rock, organic layer

Explanation:

Permeability is the ability of a layer of rock to transmit fluid such as oil or water

The factors that affect the permeability of a rock layer includes the sizes of the rock particles, the ratio of the available voids to the solid mass of the rock, the presence of trapped air and the presence of organic matter

Rocks such as gravels, and  sparingly cemented sands have high permeability

The most impermeable of the options are granite and clay which for granite has large particle mass and contain no voids while clay has very fine particles packed together with little room for water

Therefore, water moves easily between layers  soil, rock, organic layer

Answer:

SOIL, ROCK, ORGANIC LAYER

Explanation:

Edge 2020, hope this helps :)

HELP ME. don't know what this means

Answers

Answer:

1. Leaf

2. Chloroplasts

3. Thylakoids

4. Chlorophyll

Explanation:

Hope that helps!

How many protons are in the nucleus of an atom with an atomic number of 12?

Answers

16 protons

I hope it helps for you

What is the name of the tube that our hair grows from? ​

Answers

the answer is hair follicle

Helpppp meeeeeee plssss

Answers

Answer:

ok

Explanation:

ok thats the answer

In your own words, What is osmosis?

Answers

Answer:

Osmosis is the movement of water molecules through a semi-permeable layer from high concentration to low concentration until equilibrium.

Explanation:

Movement of water particles and sorry that’s all I got..

Which statements are true of all plants? Select four options.
All plants are vascular.
All plants are multicellular.
All plants are eukaryotic.
All plants are autotrophic.
All plants need sunlight.
All plants reproduce sexually.

Answers

Answer:

B, C, D, E

Explanation:

I took the test and got it right yw :)

Answer:

bcde

Explanation:

got it right on test

A base is best defined as a substance that:
O A. both captures and releases hydrogen (H+) ions in a s
B. removes hydrogen (H) ions from a solution.
C. adds hydrogen (H-) ions to a solution.
O D. stays in a solution whenever it contains hydrogen (H-)

Answers

Answer:

B

Explanation:

a base is a negatively charged anion capable of reacting with anion species such as H ions

A complete living thing, for example
a rabbit or an oak tree, is
A. a biome.
B. an organelle.
C. an organism.
D. a population.
Lihts Reserve

Answers

Answer:

C

Explanation:

a single living thing is an organism

plssss help i’m timed

Answers

The answer to your question would be C. Glucose.

10. Use the theory of evolution to explain the observation that there are no tuskless males in the
park. WHY do males retain their tusks, when 50% of females lost them.
Type Here

Answers

Tusks are essentially overgrown teeth. Yet they’re typically used for most task of daily living; digging for water or vital minerals in the ground, debating trees to secure fibrous food, and helping males compete for females

Based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.

Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.

Recall:

The theory of evolution describes the change that occur overtime through natural selection, whereby, offspring that are "fitter" are reproduced.Those that lack the fitness to survive produce fewer offspring than will survive.

Male elephants are known to have tusks. However, poaching of elephants with tusks have exacted the pressure of natural selection on the population of elephants in the park.

The few tuskless males that are left surviving therefore produce more offspring as they pass the gene of tucklessness to their offspring. Over a long time, more tuckless males emerge while males with tusks will become almost non-existence as a result of natural selection.

A study showed that most females elephants have no incisors which suggests that the trait for tucklessness is sex-linked. This explains why 50% of the females lost their tusks and males retain theirs.

In summary, based on the theory of evolution, poaching of males for their tusk exacted a pressure on the elephant population which made more tuskless males to survive more than males with tucks as a result of natural selection.

Also, tucklessness as a trait is sex-linked, this explains why 50% of females lost their tusks why the males retain theirs.

Learn more here:

https://brainly.com/question/15175610

{ pls help me brainiest }

Which type of sensory receptors monitor position and movement of the body?

A. Photoreceptors
B. Chemoreceptors
C. Proprioceptors
D. Exteroceptors

Answers

Answer:

C. Proprioceptors

Explanation:

Firstly option A. Photoreceptors - Is responsible for our vision and is a subcategory for option D. Exteroceptors.

External receptors that respond to stimuli from outside the body are called exteroceptors.

Option C. is the correct answer because Proprioceptors is the sense of self-movement and body position. It sometimes may also be referred to as our sixth sense.

Hope this Helps :)

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