Answer:
Reproductive barrier ⇒ isolation mechanism ⇒ seasonal or temporal isolation.
Explanation:
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, and the postzygotic mechanism avoids the zygote to develop and reach the adult stage.
Among the prezygotic mechanisms, we might find behavioral isolation, seasonal or temporal isolation, sexual isolation, gamete incompatibility.
Seasonal or temporal isolation occurs when individuals of different species occupy the same area, have the same reproductive behavior, and their gametes are compatible, but they do not get to mate because their reproductive seasons differ.
In the exposed example, after the speciation process, both bird species living together are not capable of mating because one of the species mates in the spring and the other one breeds in fall.
The reproductive barrier is the process in which two species are not able to reproduce due to the variation in the species.
Reproductive barrier isolation has two types:-
Mechanism seasonalTemporal isolation.
Seasonal or temporal isolation happens when individuals of different species live in the same area, have the same reproductive behavior, and their gametes are compatible,
The birds given in the question are not able to reproduce due to seasonal variation. In the speciation process, both bird species living together are not capable of mating because one of the species mates in the spring and the other one breeds in fall.
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Cells full of ribosomes would most likely
be what kind of cell?
A. plant
B. brain
C. involved in protein synthesis
Answer:
plant
Explanation:
because plant is a multicellular organism and multicellular organism are full of ribosomes
Cells full of ribosomes would most likely be plant cell.
What is ribosomes?
A ribosome is a complex molecular machine found inside the living cells that produce proteins from amino acids during a process called protein synthesis.
What is the function of ribosome?
Ribosomes have two main functions decoding the message and the formation of peptide bonds.
Hence ,A is correct option
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Write any three problems with the measurement of quantities that the SI unit system has solved.
Explanation:
1. they are convenient to use 2. it helps the international tade 3. it eases the exchange of material
What does NOT happen during interphase
pollution in the___ will have the greatest efrect on the human health
a troposphere
b stratosphere
c mesosphere
d thermosphere
Answer:
A troposphere
Explanation:
Humans live in the troposphere. It is the layer of the atmosphere closest to the Earth. If there is pollution in the layer that we live in, we are more directly affected.
which best describes the importance of mitosis to living organisms
Answer:
Mitosis is a process of cell division that leads into formation of two daughter cells that are genetically identical to each other and to the original cell. So this is greatly important to living organisms because Mitosis is a way of making more cells that are genetically the same as the parent cell. It plays an important part in the development of embryos, and it is important for the growth and development of our bodies as well. Mitosis produces new cells, and replaces cells that are old, lost or damaged.
Good Luck!!!
Explanation:
Humans grow, develop, and heal because cells can reproduce themselves. This cellular reproduction is called ______________. *
A new mountain lake just formed by a glacier.The lake starts with little nutrients or life, but over time it begins to support a variety of species.
The given question is incomplete, the complete question is:
A new mountain lake just formed by a retreating glacier. The lake starts out with little nutrients or life, but over time it begins to support a variety of species.
Which type of succession does this describe?
secondary
primary
island
aquatic
Answer:
The correct answer is primary succession.
Explanation:
The development of an ecosystem in a region where no form or sign of life existed before is termed as primary succession. In the mentioned case, a glacier at the start did not support any form of life, however, it started producing a mountain lake where some form of life started to appear gradually. With time, the development of the pioneer community will take place, which will eventually get transformed into a climax community.
In comparison, a kind of succession that takes place in the regions where life prevailed before but got destroyed or eliminated due to natural disasters or human applications is termed secondary succession.
What order do these go in?
A-Chromosome
B-Nucleus
C-Cell
D-Gene
These aren't in order. I just need to know what order to put them in.
Answer:
Cell
Nucleus
Chromosome
Gene
I guess
Answer:
The order from smallest to largest is nucleotide,gene,DNA,chromosome,nucleus,cell,organism
Explanation:
Nucleotide the buiding blocks of DNA are the smallest among the given options.DNA is bigger than gene but smaller than chromosome as DNA fits within a chromosome.
On the other hand chromosome is present within the nucleus.Nucleus along with cytoplasm and various cell organelles builds a cell.
Many cells are specifically arranged to form an organism.
So the order from smallest to largest is
NucleotidegeneDNAchromosomeNucleuscellorganismRead more on Brainly.com - https://brainly.com/question/14213661#readmore
Which two factors provide the genetic basis for variation within a species?
A. competition and protein synthesis
B.constant gene frequency and reproductive isolation.
C.mutations and sexual reproduction.
D.asexual reproduction and geographic isolation.
Answer:
Hi, there the answer is C.mutation and sexual reproduction
Explanation:
Answer:
c
Explanation:
it is the most logic answer
Which of the following is formed when a
cancerous cell replicates uncontrollably?
A. a blood clot
B. a tumor
C. tuberculosis
D. organ death
Answer:
a tumor
Explanation:
Answer:
B: a tumor is formed
Explanation:
a tumor is formed
Give differents between lytic and lysogenic cycles
Answer:
the spread of the viral DNA
Explanation:
The difference between lysogenic and lytic cycles is that, in lysogenic cycles, the spread of the viral DNA occurs through the usual prokaryotic reproduction, whereas a lytic cycle is more immediate in that it results in many copies of the virus being created very quickly and the cell is destroyed.
What is the name and function of the structure indicated by A?
a group of plant cells was exposed to radiation, which damaged the chloroplasts and coursed them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cell
Explanation:
First of all the mitochondria is the power house of a cell. Then a chloroplast is one which contains chlorophyll in which photosynthesis takes place.
Plants make use of photosynthesis to synthesize nutrients from carbon dioxide and water. If the chloroplast is damaged that means the plant would wither but it may not likely die since the mitochondria is unharmed.
Which of the following is required for evolution to occur in a population?
A. variation in the population
B. inheritance of variation through genetic differences
C. differential reproduction so that the more fit individuals have more offspring
that survive to reproduce
D. accumulation of adaptive traits so that they increase in the population
E. All of the choices are correct
Answer:
A
variations in the population
Describe what the town looked like when the Once-ler first arrived in his
wagon.
In the movie Lorax
When the Once-ler first arrived in his wagon, the town looks like very large surrounded by trees called Truffula trees.
What are the conditions of town look like?A Town looks like very huge with an enormous number of trees. Bears are randomly walking around the trees and eating truffula fruits.
Fishes were lived in a pond, a place called glorious where swamee swans were found.
Therefore, when the Once-ler first arrived in his wagon, the town looks like very large surrounded by trees called Truffula trees.
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1.Which of the following stars closest to the Earth?
A. Alnilam B. Sirius C. Sun D. Vega
2.Why do stars have colors? It is because of the ______________.
A. different locations
B. varied temperature
C. presence of oxygen
D. presence of carbon dioxide
3.Based on apparent magnitude, which of the following stars is the brightest?
A. Alpha Centauri C. Rigel
B. Betelgeuse D. Sirius
4. The following are the ways which the stars differ from each other EXCEPT
A. Brightness B. Color C. Shape D. Size
5.Stars can be found in large groups throughout the universe. What are these groups
called?
A. Asteroids B. Comets C. Constellations D. Solar system
6.How do stars appear to move in the night sky? It moves from ______________.
A. East to West C. West to East
B. North to South D. South to North
7.Why do stars appear in the sky? It is because the __________________.
A. night sky is rotating
B. universe is expanding
C. new galaxies are formed
D. earth is rotating on its axis
8. If you are located at the North Pole, where will you see the Polaris?
A. Overhead
B. Just above the horizon
C. Around 450
from the horizon
D. Polaris will not be seen in the North Pole
Explanation:
1_C
2_A
3_D
4_B
5_C
6_A
7_C
8_C
1. The closest star to earth is actually Sun at 93,000,000 miles (150,000,000 km).
2. Stars are different colors such as blue, white, yellow, orange, and red. The color indicates the star's temperature in its photosphere, the layer where the star emits most of its visible light. Thus the correct option is B.
What is star?
A star is a luminous ball of gas containing hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements.
3. Sirius star also known as the Dog Star or Sirius A, is the brightest star in Earth's night sky. Thus the correct option is D.
4. Stars vary in their mass, size, temperature, color, luminosity, and age. They differ in their distance from earth, and some orbit one or more other stars. The stars differ from each other brightness.
5. Small groups of stars are called star systems, and somewhat larger groups are called star clusters. There are even larger groups of stars, called galaxies. Thus the correct option is D.
Our solar system is in the Milky Way Galaxy, which is just one galaxy in the universe. The patterns of stars seen in the sky are usually called constellations, although more accurately, a group of stars that forms a pattern in the sky is called an asterism.
6. Stars rising in the East, passing overhead, and setting in the West.
Thus the correct option is A.
7. This motion is due to the Earth's rotation. As the spin of the Earth carries us eastward at almost one thousand miles per hour, we see stars rising in the East, passing overhead, and setting in the West. The Sun, Moon, and planets appear to move across the sky much like the stars.
Thus the correct option is D.
8. If you go as far north as the North Pole, you'll see Polaris directly overhead. As you travel south, Polaris drops closer to the northern horizon. If you get as far as the equator, Polaris sinks to the horizon.
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Helppp I need it rn I’m on time
Answer:
B- The gene pool of the population will remain relatively constant
Explanation:
Hope this helps!!
Protective gear is an important part of the job, yet employees often have to be reminded to wear it. Why do you think people are often reluctant to wear the required gear? How could their employers address these concerns?
Answer:
It's important to wear gear at all costs.
Explanation:
If you do not wear protective gear during jobs, bad things can happen. You can have dangerous chemicals in your skin, germs spread, etc. It depends on the job, really.
What kind of weak bonds holds the two strands of DNA together?
A. Nitrogen bonds
B. Phosphate bonds
C. Peptide bonds
D. Hydrogen bonds
D. Hydrogen bonds............
Answer:
D. Hydrogen bonds
Explanation:
Hydrogen bonds holds the two strands of DNA together.
what is method of chromatography
method of chromatography is seperating the modules of a solution according to one or more of its chemical proporties.
The diagram shows fossil layers in different locations. The different shading in the diagram indicates different types of rock.
How could fossils like the ones shown support the theory of evolution?
A. Fossil evidence supports the hypothesis that evolution can occur at different rates in different clades.
B. Fossil evidence supports the hypothesis that individual organisms and populations evolve to adapt to a changing environment.
C. Fossil evidence provides a complete record of the organisms that once lived and are ancestors to other organisms.
D. Fossil evidence provides information on the allele frequency in ancestral populations.
Answer:
C. Fossil evidence provides a complete record of the organisms that once lived and are ancestors to other organisms.
Fossil evidence provides a complete record of the organisms that once lived and are ancestors to other organisms. Thus, option C is correct.
What proves the evolution in different clades?Fossil evidence supports the hypothesis that evolution can occur at different rates in different clades. Fossil evidence supports the hypothesis that individual organisms and populations evolve to adapt to a changing environment. Fossil evidence provides information on the allele frequency in ancestral populations.
Fossil evidence provides a complete record of the organisms that once lived and are ancestors to other organisms. The diagram shows fossil layers in different locations. The different shading in the diagram indicates different types of rock.Fossil evidence provides information on the allele frequency in ancestral populations.
Therefore, Fossil evidence provides a complete record of the organisms that once lived and are ancestors to other organisms. Thus, option C is correct.
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Which is a way for the body to conserve water during periods of heavy sweating?
It can increase the overall temperature.
It can filter less water out of the blood.
It can take in less water.
It can take in less air.
What strand is "read" in order to get the amino acid sequence?
Answer:
In translation, the cell uses an mRNA strand that it has just transcribed from its genetic code as a template to assemble proteins. The cell has just transcribed this mRNA stand from its DNA, and now it translates the mRNA's nucleotide sequence into a chain of amino acids.
Explanation:
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Cell Membrane Diseases Cell membrane diseases are life -threatening disorders that are in nature , and they usually work against proteins in our body that are key to ion channels and various receptors within the membrane . These diseases work by either disrupting the normal functions of the or by simply affecting the cell membrane . Many of these disorders contain other components as well. Some disorders involving trouble with the cell membrane
1) Cystic fibrosis
2) Alzheimer's disease
3) Duchene Muscular Dystrophy
4) Hyaline Membrane disease
Answer
cell kytosis
Explanation
what can people do to preserve earths water supply
Answer:
Turn off the faucet if you aren’t using it atm,
Not pollute the water with gasoline
Explanation:
These will help preserve earth water supply because then you aren’t wasting the water or making it undrinkable.
What might happen if a coral species that is well adapted to higher temperature was introduced into a coral reef habitat?
Answer:
May die eventually
Explanation:
A coral species which is living in a regions of high temperature will not be able to be in symbiotic relationship with algae at normal temperature of the sea side coral reefs and may expel it out. A long lasting exposure to change in temperature will lead to bleaching, turning corals white and ma eventually cause death.
How do many insects handle the bitter cold of winter?
Group of answer choices
they develop wings
they hide inside trees
they blend in with the twigs
they form a hard cocoon
pls help me which choice is it
Answer:
they hide inside trees
Alteración leve o grave del funcionamiento normal de un organismo o de alguna de sus partes debida a una causa interna o externa.
Answer:
enfermedad
Explanation:
De acuerdo a la Organización Mundial de la Salud (OMS) el término enfermedad refiere a la alteración y/o deterioro del estado fisiológico normal de un individuo o partes de su cuerpo, cuyas causas a menudo son conocidas. A su vez, una enfermedad es conocida cuando possee un cuadro clínico con síntomas preestablecidos y característicos. Las enfermedades se pueden clasificar de acuerdo a muchos tipos diferentes de parámetros (por ejemplo, de acuerdo a su modo de transmisión en infecciosas/no infecciosas, hededitarias/ambientales, etc). Por otra parte, el concepto de salud se refiere a un estado de bienestar físico, mental y social del individuo, el cual no solamente está asociado a la ausencia de enfermedades.
In chart 2, the lines labeled Age 65+ and Age < 5 show a distinct trend. If this trend continues, name one way it will affect human society negatively.
Answer: in chart 2, the age 65+ line is increasing and the age <5 line is decreasing. These trends indicate that the number of old people is increasing while the number of young people is decreasing.this can strain resources, because there may not be enough young people to take care of the old when they are sick.
Explanation:
Answer:
In chart 2, the Age 65+ line is increasing and the Age < 5 line is decreasing. These trends indicate that the number of old people is increasing while the number of young people is decreasing. This can strain resources, because there may not be enough young people to take care of the old when they are sick.
Explanation:PLATO
Which of the following accurately describes ionic bonds?
O A. Atoms share one or more protons.
O B. Atoms transfer one or more electrons.
O C. Atoms share one or more electrons.
O D. Atoms transfer one or more protons.
Answer:
C. Atoms share one or more electrons.
Explanation:
Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between atoms.