how does reducing gene flow cause speciation
Answer:
reduction of gene flow can occur due to geographical isolation too
or it can be dur to sympatric or allopatric speciation an occur.
where due to this the species are being behaviouraly isolated, and mad too reject mating due to certain reasons. Moreover mutations too can take palace causing for a genetic drift. Where the isolated species may undergo selection pressure too. So as an overall view the gene flow eventually decreases since the species diversity along with the genetic diversity decreases causing fare the reduction of the gene pool.
After many generations a new species will be formed. Resulting for speciation.
(refer to the AL biology text book under biodiversity related topics, it will be easy)
the structure that prevents perspiration from running down the forehead into the eyes and shades the eyes from sunlight is the
Answer:
The Eyebrows
Explanation:
The eyebrows are not just those short hairs that humans can use to make signals for non-verbal communication with other humans, they, as one of the accessory structures of the eye, protect the eyes from perspiration (sweats) dripping down the forehead, or water running down from the head from entering the eyes, causing irritation. They also help shade the eyes from the high impact of the sunlight and help keep dirt away too.
What percentage of the U.S. population has Rh+ blood?
Answer:
85% of the the U.S. population has Rh+ blood
Explanation:
Out of the total population of USA, nearly 15% of the individuals are having Rh negative blood.
The remaining population has Rh positive blood which is equal to 100-15%
or 85%.
Thus, 85% of the the U.S. population has Rh+ blood
What is a phenotype?
Two alleles are different
The alleles an organism carries in its
genome, set of alleles.
The characteristics you can see in an organism. Physical appearance, personality, talents, weaknesses, etc
Two alleles that are the same.
Answer:
phenotype refers to the observable characteristics of an organism
Volcanoes form most commonly in regions where one tectonic plate plunges beneath another tectonic plate. How does this process
lead to volcano formation?
OA. The plate plunging downward suddenly turns upward, breaking through the surface to form volcanoes.
OB. The plate plunging downward knocks loose part of the Earth's core, which rises up to form volcanoes at the surface.
OC. It causes strong earthquakes, which shake the ground upward into the shapes of volcanoes.
OD. It causes part of the overriding plate to melt into magma, which rises up to form volcanoes at the surface.
Answer:
OD is the correct answer
Answer:
The answer is
OD. It causes part of the overriding plate to melt into magma, which rises up to form volcanoes at the surface.
A student put the powder to the corom board . Sciencetific reason for adding powder is ,
A- frictional force is increased by powder.
B- frictional force is decreased by powder .
C- the speed of carom discs is increased due to powder.
D- the speed of carom discs is decreased due to powder .
Answer:
B or D
Explanation:
think of it how you use chalk on a chalk board, its less friction using chalk instead lets say a marker on a white board.
what is the difference between biotic and abiotic limiting factors?
Explanation:
Abiotic limiting factors restrict the growth of populations. They help determine the types and numbers of organisms able to exist within an environment. Biotic factors are living things that directly or indirectly affect organisms within an environment.
HOW can you be a good steward of your epigenome?
Answer: have good genes and regulate the cells case it can affect the future
i don't know.............
PLEASE, PLEASE, PLEASE HELP!!! REAL ANSWERS ONLY!!! NO LINKS OR I WILL REPORT!!! NO BOTS EITHER!!!
Respond to the question: How do things move across a cell membrane? Give two examples. (5-8 sentences)
https://www.khanaca demy.org/gclassroom/test-prep/mcat/cells/transport-across-a-cell-membrane/v/how-do-things-move-across-a-cell-membrane
That is the video. Remove the space to make it work.
Answer:
osmosis ........... just use a paraphrasing tool for the explanation below
Explanation:
Another method of movement across the membrane is osmosis. Osmosis is the movement of water from a region of higher concentration to one of lower concentration. Osmosis occurs across a membrane that is semipermeable. A semipermeable membrane lets only certain molecules pass through while keeping other molecules out.
just use a paraphrasing tool
1. All of the following are examples of density- independent factors EXCEPT:
A) Weather
B) Predation
C) Natural disasters
D) Human activity
Are the nitrogenous bases just free floating in the nucleus? If so..why are they just floating? And how are they made? Thank you :)
Answer:
No, they order in sequences of base pairs in DNA
Explanation:
As you know, there are four nucleotides: Adenine, Thiamine, Cytosine, and Guanine. Adenine and guanine are purines, and cytosine and guanine are pyrimidines. You might not know what that means, so just in case purines are longer and pyrimidines are shorter. Therefore, A pairs with T and C with G. These pairings, along with other structural enzymes, build strands of DNA in the nucleus. I hope that helped, if you have more questions just let me know.
What is the primary function of this body system?
Answer:
C. to transport nutrients and water and oxygen
Explanation:
Answer: C
Explanation: The body system shown is your heart and blood vessels.
What is true about a trophic level in an ecosystem?
Select all that apply
The amount of energy flowing into secondary consumers must equal the
amount that flows into primary consumers.
The ecosystem is an isolated system.
The ecosystem is an open system
The amount of energy flowing into the secondary consumers is less than
the amount that flows into the primary consumers.
HHEELLPPPHHH
What landscape feature contributes to the dryness of deserts?
O Desert canyons collect all water and funnel it out of the desert.
O Mountains block the winds that bring rain clouds.
O The open, flat areas of a desert prevent clouds from forming.
O Desert lakes absorb all the water.
Answer:
Deserts are areas that receive very little precipitation. ... Others are dry expanses of rock, sand, or salt flats. ... air hinders the formation of clouds, so very little rain falls on the land ... In fact, the Atacama Desert is the driest place on Earth. ... With little vegetation to block it, the wind can carry sand and dust
Explanation:
i hope this help
Answer:
he was trying to say the answer was :
C.The open, flat areas of a desert prevent clouds from forming.
Name 2 processes that release carbon dioxide into the atmosphere
Answer:
respiration x decay
Explanation:
Answer:
Natural sources include..
Explanation:
Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
:Copper is a mineral commonly used in electronics. Copper ore deposits were created by volcanic activity. Heat and pressure creates copper ore and deposited it in sedimentary rock layers. Copper is considered a resource. renewable non renewable or conserved
No Links IF You Dont know the answer don't answer it
Answer:
Copper is a metal that has been deposited from hot sulphur solutions, created in volcanic regions. The hot solutions concentrated the copper up to a thousand times more than would normally be found in rocks. The resultant enriched rocks are called copper ores.
Explanation:
thank me later
4 Why will alcohol keep on boiling even after the flame was turned down?
The alcohol keep on boiling even after the flame was turned down, Alcohol has a lower boiling point than water.
What do you understand by the term boiling point?The boiling point is the temperature at which the substance passes from a liquid to a gaseous state.
Thus, Alcohol has a lower boiling point than water.
To learn more about boiling point click here:
https://brainly.com/question/25777663
#SPJ2
Which describes the process of cytokinesis?
A. Chromosomes duplicate
B. Spindle disintegrates
C. Nucleus disappears
D. Cytoplasm divides
Answer:
D
Explanation:
During Cytokinesis the cytoplasm divides into two daughter cells.
Please!! I’ll give you lots of points!! PHow do the sensory spines most likely help the cockroach
survive in its environment?
A. They improve the cockroach's vision so it can see
predators sooner.
B. They allow the cockroach to change its body shape
to confuse predators.
C. They reduce the friction along the top of the
cockroach so it can move faster than predators.
D. They allow the cockroach to move through small
spaces where it is unable to use its feet to escape
predators.
Different levels in the arctic food web are represented in
che energy pyramid.
Based on the food web, which of the following identifies
the organisms in each level of the pyramid?
Answer:
the first level is producers (which is the food/ feeder)
second level is primary consumers ( the prey/ the one getting eaten/ eats the feeder)
the third level secondary consumer ( the predator eats the prey )
Explanation:
i don't know what the question was really so I hope this helps :-)
Does light have an effect on carbon dioxide production by plants and animals?
(No Links!! type the answer)
Answer:
Light provides the energy for photosynthetic pig- ments to convert carbon dioxide (CO2) and water into sugars and oxygen. As light intensity increases – until a point – the amount of sugars increases and thus, more energy is available for plant growth and maintenance. ;)
In normal differentiated somatic cells, telomerase Group of answer choices repairs double strand breaks in DNA. adds material to the ends of chromosomes with each cell division. is not expressed and telomere tips erode with each division. removes telomere tips with each division.
Answer:
BTS DNA
Explanation:
ur ma su my love ni uryo uro ni ani ni ka ur wan sam dalla baby. yeong wonhi yeong wonhi yeong wonhi hari nika
What is the color of the stars with the lowest surface temp?
Answer:
red
Explanation:
While investigating applications of science knowledge, Willy learned that scientists have used genetic engineering techniques to attach insulin-producing genes to bacterial DNA. These bacteria produce large amounts of scarce human hormones. Scientists predict that hormones produced by bacteria will be inexpensive and will not cause allergic reactions. (SC.7.N.1.5) Scientists developed hormone-producing bacteria because they wanted to
Answer:
develop methodologies to increase the production of hormones for human use
Explanation:
Genetic engineering refers to the manipulation of an organism's genes by using recombinant DNA (rDNA) techniques in order to develop biotechnological and biomedical applications. For this purpose, genetically engineered bacteria carrying recombinant human genes can be used for producing human hormones. For example, recombinant human insulin can be produced by using Escherichia coli strains, and this hormone can then be purified as genetically engineered bacteria grow in order to treat diabetic patients. For this purpose, a bacterial plasmid (i.e., an independent fragment of circular bacterial DNA) is cut with restriction enzymes and then the human gene encoding the hormone of interest is inserted into the plasmid. Finally, the genetically modified plasmid may be readily transferred to the bacterial chromosome and thus increase the supply of the hormone of interest for its use by humans.
Which earthquake wave travels the fastest and arrives first?
a) S-wave
b) tension wave
c) P-wave
d) shear wave
Answer:
C) P-wave
Explanation:
P waves travel the fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.
answer this and i will brai
nlist
Answer:
whats the question...............
I Need heelp really bad plz someone
Answer:
the answer is sunlight
Explanation:
got it correct on the test
Will give Brainiest.
100pts.
Please label this.
Answer:
Explanation:
11= vena cava
12= right atrium
13= the red one that i can't see lol
14= right ventricle
15= pulmonary artery
16= pulmonary veins
17= left atrium
18= left ventricle
19=aorta
Answer:
11. Right pulmonary artery
12. Right atrium
13. Pulmonary valve
14. Right ventricle
15. Left pulmonary artery
16. Pulmonary vein
17. Left atrium
18. Left ventricle
19. Aorta
Explanation: The picture was a little blurry but I hope this helps!
PLs, help me with this question
Answer:
Amino acids
Explanation:
why are virus able to recognize a host cell,enter its membrane and take over
