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Related Questions
8. In a population of beetles, there is a gene for color with two codominant alleles. The allele R leads to red beetles and the allele B leads to blue beetles. Heterozygous beetles are red and blue spotted. A heterozygous beetle mates with a red beetle. What is are the genotypic and phenotypic frequencies of their offspring? Please show all of your work. (2)
Answers
Answer:
The genotypic frequency = 1:1
The phenotypic frequency = 1:1
Explanation:
Given that:
The allele → R = Red beetles
The allele → B = Blue beetles
Since the gene color shows a codominant allele
The Red Beetle = RR
The blue beetles will be = BB
The heterozygous beetle will be = RB
∴
The punnet square showing the crossing of RB × RR is:
R B
R RR RB
R RR RB
The result shows that we have two red beetles and two heterozygous beetles.
Hence;
The genotypic frequency = 1:1
The phenotypic frequency = 1:1
Visit the link below and use the information to answer the following question.
Ecological Succession: Transformation of Communities over Time
Why does secondary succession occur faster than primary succession?
Answers
Answer:
Because there is already presence of soil and nutrients in secondary succession
Explanation:
Ecological succession, which is the series of gradual change that occurs in a community over time, can be of two forms namely: primary succession and secondary succession.
- Primary succession is a kind of succession that occurs in a barren land where no form of life has existed before while secondary succession occurs on a land that has been previously colonized by certain organisms called PIONEER SPECIES, and hence, a substrate containing nutrients called SOIL for growth is available during secondary succession.
This accounts for the reason the secondary succession is faster than the primary succession because there is already presence of soil and nutrients in secondary succession.
Answer:
Soil with nutrients is already present. Seeds are present from earlier occupants, brought in by wind, and/or germinate after fire.
Explanation:
Edge 2021
2. Which is a function of the cardiovascular system? *
convert oxygen and glucose into ATP (energy)
O convert oxygen into glucose
O carry oxygen and glucose to body cells
O store oxygen and glucose in the blood
Answers
hope that helps!!
What process takes place in meiosis but not mitosis?
A.
sister chromatids separating
B.
crossing over
C.
DNA replication
D.
DNA condensing into chromosomes
Answers
Answer:
A. sister chromatids separating
Answer:
will go for b. crossing over
Explanation:
"The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred. The events that occur in meiosis but not mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads."
The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no stimulating effect on RNA synthesis. A footprinting experiment on a rifamycin treated sample shows that the polymerase remains located at the promoter site in the presence of eNTPs and Mg2 ion. What step of transcription is rifamycin likely to block
Answers
Answer:
transcription initiation
Explanation:
Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:
1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.
2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence
3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).
In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.
PLEASE HELP! Which of the following statements correctly describes the relationship between erosion and deposition?
A.
Erosion breaks rocks into pieces, and deposition moves the pieces.
B.
Deposition and erosion both involve the movement of small pieces of rock from one place to another.
C.
Erosion is the movement of small pieces of rock from one place to another, and deposition is when the rock settles in a new location.
D.
Deposition and erosion break rocks into smaller pieces, but the rocks remain in place.
2 / 14
Answers
Answer:
B
Explanation:
thsey both move or break rocks
The fossil record indicates that in some cases reasonably well-defined species appear suddenly and remain unchanged for a long time before they become extinct. This phenomenon is referred to as
Answers
Answer:
The correct answer is - punctuated equilibrium.
Explanation:
The phenomena represent punctuated equilibrium, according to which the new well-defined species appear suddenly and quickly. These species remain unchanged for a long time as they occur because of mutations in genes.
This phenomenon suggests that once it made in the fossil record the population becomes stable for a long time until they become extinct and have to adapt to the changes take place to survive.
2. How much is the average temperature at depth of 10 km of earth surface?
A) 200 °C
C) 650°C
B) 900°C
D) 20°C
Answers
Answer is 200 o c.
The average temperature at depth of 10 km of the earth's surface is 200°C. Thus, the correct option is A.
What is the average temperature?An average temperature may be defined as the annual mean temperature of any geographical location which is estimated approximately by the average temperature of the maxima and minima for the warmest and coldest months of the year.
It is the principle that the increase in the depth below the surface of the earth ultimately leads to the rising of average temperature. This is due to the process of apparent heat.
It may be possible that higher or lower temperatures also occur. but the average temperature at depth of 10 km of earth surface should approximately remain 200°C. It is a factual type of question.
Therefore, the average temperature at depth of 10 km of the earth's surface is 200°C. Thus, the correct option is A.
To learn more about the Average temperature of the earth's surface, refer to the link:
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Taking two aspects of their relationship, explain how the marriage of the Prophet and Khadija set a good example for Muslim marriages today?
Answers
Answer:
Due to their behaviour towards each other.
Explanation:
The marriage of the Prophet and Khadija set a good example for Muslim marriages today because their strong relationship and respect towards each other is the key to their beautiful marriage life. In marriage life, both husband and wife has great contribution to their relationship. If both husband and wife respect each other and support in every situation of life so their relationship will be strong and they live a beautiful marriage life so we can say that the marriage life of Prophet (S.A.W) and Khadija is a good example for all Muslims.
Wind on Earth happens due to the:
A. Constant movement of the air through the convection cycle.
B. Temperature differences between the poles and the equator.
C. The Sun heating different parts of the Earth unevenly.
D. All of the above
Choose one correct answer.''
Answers
Answer: Hewo, there! your answer is Below
D. All of the above
Explanation:
Wind is the movement of air caused by the uneven heating of the Earth by the sun. ... Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system. At the same time, cooler, denser air moves over Earth's surface toward the Equator to replace the heated air.
Hope this helps you
Have a great day!!
Answer:
Hello! Your answer would be, D) All of the above.
Explanation:
The energy that drives wind originates with the sun, which heats the Earth unevenly, creating warm spots and cool spots. Two simple examples of this are sea breezes and land breezes. Sea breezes occur when inland areas heat up on sunny afternoons. That warms the air, causing it to rise.
Hope I helped! Brainiest plz!♥ Have a nice morning! -Abby
What is the name of the atmosphere we live in, which is about 5-9 miles thick,
depending on where you are on Earth.
A.) The Stratosphere
B.) The Exosphere
C.) The Mesosphere
D.) The troposphere
Answers
Answer: d
Explanation: The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.
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Once nutrients have been broken down through the process of cellular respiration, which of the following must also happen in order for an animal cell to maintain homeostasis?
The cell must take in sunlight.
The cell must remove wastes.
The cell must use up the energy molecules.
The cell must lower its operating temperature.
HELP PLEASE
Answers
Explain: it’s definitely not option 1, it’s an animal cell. The last one I doubt as well. So it is down to B and C.
A marsupial mole has claws for burrowing, a keen sense of smell, and reduced vision in its eyes. The placental mole, a mammal on a
different branch of the mammalian evolutionary tree, has claws for burrowing, a keen sense of smell, and reduced vision in its eyes.
Which statement(s) describe the relationship between these two moles? Select ALL that apply.
A)
Convergent evolution occurred in these two mammalian species.
B)
These two species evolved under similar environmental pressures.
C)
These two species do not have a common ancestor, but evolved from
separate lineages.
D)
Identical mutations occurred within the two different lineages creating
identical phenotypes.
E)
These two species share a more recent common ancestor than they do with
other mammalian species.
Answers
Answer: a and b
Explanation:
i just took it
The relationship between these two mammalian species is that Convergent evolution occurred in these two mammalian species. That is option A.
What is Convergent evolution?Convergent evolution is the type of evolution where distantly related organisms evolve similar traits to adapt to similar environmental conditions.
The marsupial mole and the placental mole are distant species with similar features.
Therefore, the relationship between these two mammalian species is that Convergent evolution occurred in these two mammalian species.
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Is there a human carrying capacity on Earth? Explain why or why not.
Answers
Answer: Every species has a carrying capacity, even humans. However, it is very difficult for ecologists to calculate human carrying capacity. Humans are a complex species. We do not reproduce, consume resources, and interact with our living environment uniformly.
HOPE THIS HELPS
What is the speed of a runner who travels 20m in 10s?
Answers
Answer:
2m/s
Explanation:
speed =distance ÷time
Why does oxygen decrease the rate of photosynthesis?
Answers
What is the correct equation for the breakdown of ozone? please answer quick
Answers
Answer: This electricity converts the oxygen molecule to ozone. Our equation is as follows: 3O2 + energy = 2O3.
The correct equation for the breakdown of ozone can typically occur in a series of two steps known as the destruction of ozone. It is illustrated thus;
Cl + O3 ⇒ ClO + O2ClO + O ⇒ Cl + O2The net reaction of the above process is the reaction of an oxygen atom with an ozone particle to form two molecules of oxygen.
The catalyst in this reaction is chlorine because it undergoes changes as the process continues while ozone is removed in the process. In the presence of sunlight, atomic oxygen is formed.
This entire process is referred to as the destruction of ozone.
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[15 POINTS!!]
The diagram below shows a food web.
How would the removal of the rabbit population affect the other populations in the ecosystem?
A. The field mouse population will decrease.
B. The snake population will increase
C. The lizard population will increase.
D. The tree population will decrease
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Answer:
C. because the grasshopper will have less competition to eat Grass letting them reproduce more, since the grasshopper's population increases there will be more food for the lizards helping them reproduce more.
The diagram below, best represents.
Answers
Answer:
B. An Ecosystem
Explanation:
A C and D do not fit the picture.
following the laws of Convervation of matter, 10 grams of iron combined with 5 grams of sulfur will yield _____ grams of iron sulfide
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Answer:
15
Explanation:
Since the law of conservation of mass applies to all the chemical reactions this will also end in 10+5 equalling 15 grams
what is Classification?
Take 50 points
Answers
Answer:Classification, in biology, the establishment of a system of categories on the basis of presumed relationships among organisms. The science of biological classification is commonly called taxonomy.
Answer:
Thanks
Explanation:
Thanks
Is it true that if one part of the brain is damaged all body functions will be affected
Answers
Answer:Sometimes only a single area is affected, but in most cases of TBI multiple areas have been injured. When all areas of the brain are affected, the injury can be very severe.
so yes
Explanation:
Answer:
In some cases
Explanation:
In some cases hiting specific parts of the body can restrict or damage all body functions, but those cases are rare. It is more likely that if a part of the brain is damage only a few specific function are affected.
Brainliest?
Which of the following is true about pea
plants?
A. They produce a small number of offspring.
B. They produce asexually.
C. Their female parts can be artificially pollinated.
D. They don't have many contrasting characters.
Answers
The statement true about pea plant are as,
They produce a small number of offspring.Their female parts can be artificially pollinated.What is artificial pollination?The pollination which is carried by human is called artificial pollination.It is used to pollinate plants when natural pollination is insufficient and undesirable.The artificial pollination consider as mechanical technique.There is no requirement of insect and weather.The example of plant in which artificial pollination can occur is kiwifruit.To learn more about artificial pollination here.
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Crossing over plays a critical role in increasing the genetic variation among offspring of sexual reproduction.
a. True
b. False
Answers
Answer:
T
Explanation:
I Got It Right.
What is the answer to that question
Answers
Answer:
D. Steps to use for doing the Heimlich maneuver
Explanation:
That's what the section is talking about.
in a microscope never use the _____with ________when you are done
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Answer:
In a microscope never use the __scope___with ___high power_____when you are done
Explanation:
what is lenticles?
Take 50 points
Answers
Answer:
A lenticel is a porous tissue consisting of cells with large intercellular spaces in the periderm of the secondarily thickened organs and the bark of woody stems and roots of dicotyledonous flowering plants.
Explanation:
What produces gene flow?
ws
O mating between populations
O mutation
O geographical isolation
O speciation
Answers
Answer:
O mutation
Explanation:
please mark this answer as brainliest
Please help I’ll mark you as brainliest if correct! #10
Answers
Answer:
H dominant
Explanation:
If a trait has two possible outcomes and one is expressed over the other, it means one is dominant and the other is recessive. Dominant traits are expressed when there is at least one dominant allele (can be Aa or AA). Recessive traits are expressed only if both the alleles are recessive (has to be aa). If the trait is being expressed over the other one it is a dominant trait.
Where would you expect to find humans with the darkest skin color in the Northern Hemisphere (from 10°N to 60°N)?
Answers
Answer: Australia
Explanation: