Answer:
its c
Explanation:
Answer:
e
Explanation:
what would the ploidy of the zygote be if egg and sperm were produced by mitosis rather than meiosis? how would this affect the ploidy of each successive generation?
Answer: the ploidy of the zygote would be genetically identical to the parent cells. since mitosis doesn't reduce the number of chromosomes by half, each successive generation would have twice as many chromosomes as the last.
Explanation:
The ploidy of any zygote formed from egg/sperm produced by mitosis rather than meiosis would be tetraploidy.
Meiosis reduces the diploid chromosome (2N) in parent cells to haploid (n) in the daughter cells. During fertilization two haploid cells (sperm and egg) fuse to form a 2n zygote.
If mitosis replaces meiosis for the production of eggs/sperms, it means eggs and sperms would have complete diploid chromosomes instead of haploid. Thus, during fertilization 2n sperm fuses with 2n egg to form a 4n zygote. A 4n individual is known as a tetraploid.
If mitosis remains as the division for producing eggs and sperms, it means the ploidy level of each successive generation will be doubling from 4n to 8n to 16n, on and on.
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Water cycle -
When water is removed from the soil and subsurface
water flows via roots to be used by the plant. Most of
the water that plants uptake passes though into the
atmosphere.
Answer:
This is the process of transpiration because it has to do with plants!
If all cells in your body contain the same set of DNA, why is it that some cells become muscles calls, some become skin, or nerve cells?
Answer:
This is due to CELL DIFFERENTIATION
Explanation:
All living cells are made up of the genetic material called DNA, which are exactly of the same sequence across all cells. However, the cells that contain the same DNA sequence are different in function.
This is as a result of a process called CELL DIFFERENTIATION, which is the process whereby cells specialize or become specific in function as a result of the expresssion or not of certain genes in the DNA sequence of each cell. In other words, cells might contain same DNA sequence but the genes are not all expressed at the same time, leading to the different function. Therefore, some cells become muscle cells, skin, or nerve cells with different functions.
Urgent!! Why is it important to make exact copies of cells?
Answer:
Producing exact copies ensures that when a cell divides, the offspring cells will receive the same genetic information as the parent cell. cancer can result when errors in the replication of DNA in genes that control how a cell divides.
Explanation:
hope this helps...
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What will occur if a species is divided into two groups and allowed to reproduce in different environments for many generations?
Answer:
The original species will diverge into two new species. It will occur speciation. It will occur some sort of allopatric speciation.
Explanation:
When the original species is divided and placed under different environments, where they can reproduce for many generations, many changes or mutations will occur in each group. These changes will depend on each group´s environment and its ecological pressures and will lead to divergence. Pressures act on individuals and make them adapt to the new environmental conditions. Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.
The biological concept of species states that individuals of the same species can reproduce because they have a genetic reservoir in common: many genetic variants.
Genetic variability is the measure of a species organism´s tendency to differentiate. In genetic variability, individuals of the same species are not identical. They are recognizable as members of the same species, but they differ in shape, function, and behavior. There exist variations among individuals of the same species.
Genetic variability originates from mutations, recombinations, and karyotype alterations. It allows or makes possible evolution.
Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.
The process of allopatric speciation involves different steps:
• The emergence of the barrier.
• Interruption in the genetic interchange
• The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
• Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
• Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.
Answer:
divergence, potentially giving rise to two different species
Which statement describes transform boundaries?
O Rift valleys are formed.
O Mountains are created.
O Faults form in the lithosphere.
Plates move toward each other.
Transform boundaries are described as faults that emerge in the lithosphere. So, the correct option is C.
What are Transform boundaries?Transform boundaries, which are often referred to as conservative plate boundaries, are places where two tectonic plates move past one another while moving in opposite directions along a fault in the Earth's crust.
Transform borders happen when two tectonic plates move past one another horizontally via a lithosphere fault. As a result of this movement, rocks may break and slide along the fault, resulting in earthquakes. Transform borders do not include the creation or destruction of crustal material, unlike divergent boundaries where rift valleys are formed or convergent boundaries where mountains are built when plates move towards one another.
Therefore, the correct option is C.
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HELP ASAP
how many amu is there for salt
Answer:
One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams.
Explanation:
What factors limit the size of a cell?
Answer:
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shape.
Explanation:
I hope this helps you!
Explain how carbon is related to each of the examples below. (1 point)
Organic matter
Photosynthesis
Cellular respiration
Organic Matter: Carbon (C) is what makes something organic; if it doesn't contain carbon, then it is not a living thing. For this reason, carbon is often considered the element of life.
Photosynthesis: Carbon is part of the compound Carbon Dioxide (CO2), and CO2 is a reactant in the process known as photosynthesis.
Cellular respiration: Although similar to photosynthesis, cellular respiration contains CO2 as a product, not a reactant, as is the case with photosynthesis.
Hope all of this helps!!
If the probability of death is high early in an individual's life, we would predict
a young age for first breeding attempt
little to no parental care
great number of young produced at each breeding attempt
all of the above
none of the above
Answer:
All of the above.
Explanation:
An earthworm helps to break up soil so that the roots of plants may receive oxygen. This enriches the soil and provides food for other organisms. What do these characteristics describe about the earthworm?
the answer is its niche
this is because a niche refers to the position or function that an organism occupies within its environment among other species of plants and animals.
hope this helped xoxo
Using data from seismic waves, geologists have learned that Earth’s interior is made up of several
a.
continents.
b.
layers.
c.
ridges.
d.
trenches.
Please select the best answer from the choices provided
A
B
C
D
WILL GIVE BRAINLIEST
Which of the following lifestyle modifications is NOT likely to be helpful in controlling genetically linked diseases?
A) taking a healthier diet
B) exercising regularly
C) maintaining a proper weight
D) planning to quit smoking at 40
E) regulary having medical check ups
Answer:
E) regularly having medical exams
Explanation:
Hope this helps!!
Answer:
D) Planning to quit smoking at 40
Explanation:
sooooooooooooooooooo
Sooooo can some body solve this if ur smart:
:)
Q1. (2 ²∕⁵ x 3 ¹∕⁸) x 3¹∕⁵ ÷ 3¹ also : Q2. A shopkeeper has 12 dozen eggs he sold 2/3 (two upon three) of the eggs everyday Find the total number of eggs he sold and how many eggs were left?
answer for Q1) 8
answer for Q2) 216 eggs per day you find the other answer and show the step by step for both questions.
Only 3% if the water ib Earth us freshwater. About 2/3rds of that water is not available for
humans use because ..
Answer: 2/3 of the water is not availible for human use because it is salt water not fresh.
Explanation:
how do plants move carbon from the atmosphere
At which part of the cell are electrical signals transmitted between nerve cells?
soma
axon
myelin sheath
dendrite
Dendrite is regarded as the part of the cell in which electrical signals are
transmitted between nerve cells.
Dendrites receive signals or communication from other cells and help to
transport the electrochemical charge from other neurons to the cell body or
axons which conduct them to the central nervous system for processing.
Dendrites have also been found to release neurotransmitters which makes
their study more complex and diverse.
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Which historic human disease has a life cycle and transmission flow illustrated above?
A) HIV
B) Plague
C) Cholera
D) Middle East Respiratory Syndrome
Answer: Plague
Explanation: it’s transmitted through fleas
Select the correct answer.
Which degree of latitude designates the position of the equator?
A.
0
B.
45
C.
90
D.
120
Answer:
A
Explanation:
During transpiration, water moves through a plant and moves out into the atmosphere through the leaves. Transpiration is the result of the interaction of which two parts of a plant?
Transpiration is the evaporation of water at the surfaces of the spongy mesophyll cells in leaves, followed by loss of water vapour through the stomata . Transpiration produces a tension or 'pull' on the water in the xylem vessels by the leaves. Water molecules are cohesive so water is pulled up through the plant.
Transpiration is the outcome of the association between the xylem vessels and stomata present in the leaves.
• The evaporation of water at the surfaces of the spongy mesophyll cells in the leaves succeeded by the loss of water vapor via the stomata is termed transpiration.
• Transpiration generates a pull or tension on the water in the xylem vessels, and these molecules of water are cohesive so pulling up of water takes place through the plant.
• The primary sites of transpiration are the stomates present in the leaves. This stomata comprises two guard cells, which produce a small pore on the leaves' surfaces. These guard cells monitor the closing and opening of the stomates in reaction towards different environmental stimuli, and thus, regulate the loss of water by transpiration.
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For the below image label the 13.polar area and 14. Non polar area on the diagram
Answer:
http://images.pcmac.org/SiSFiles/Schools/AL/MobileCounty/CauseyMiddle/Uploads/DocumentsCategories/Documents/NBp10_Cell_Transport_-_Amoeba_Sisters_%7BSIS5384FB64E650%7D.pdf
use this link, you will find the answer
Explanation:
why is the vegetation at the bottom of mountains generally not the same as vegetation found at higher altitudes on mountains
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Why are formation and decay considered a cycle of nature?
The formation and decay is considered a cycle of nature due to the governance of nature.
Why are formation and decay considered a cycle of nature?
The formation and decay is considered a cycle of nature because this process is controlled by natural forces of the environment. Nature provides the environment for the formation and decay processes.
So we can conclude that the formation and decay is considered a cycle of nature due to the governance of nature.
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How can ecosystems benefit from wildfires
Answer:
Fires often remove alien plants that compete with native species for nutrients and space, and remove undergrowth, which allows sunlight to reach the forest floor, thereby supporting the growth of native species. ... Overall, fire is a catalyst for promoting biological diversity and healthy ecosystems.
Explanation:
pls helps will reward brainliest
Answer: intercalary meristem
Explanation: meristematic tissue at the base of the leaf blade is ben to the plant growth
Scientific Discoveries
3. An important clue to the structure of DNA was provided by
A. a protein analysis of a muscle cell.
B. an X-ray diffraction photograph of DNA.
C. an MRI image of a brain cell.
D. a microscopic examination of a fruit fly.
Check Answer
Answer:
B
Explanation:
I got it right :D
An important clue to the structure of DNA was provided by an X-ray diffraction photograph of DNA. Thus, the correct option is B.
What is X-ray diffraction?X-ray diffraction (XRD) is a widely used technique to assess the crystallinity and structure of the solid samples such as biomolecules like DNA and proteins. The crystal X-ray diffraction phenomenon results from the scattering process in which the X-rays are scattered by the electrons of the atoms which are present in the sample without any change in the wavelength.
Rosalind Franklin's X-ray diffraction method patterns of the DNA molecules rendered the important clue from which DNA has the structure of a double helical structure. The most famous X-ray photograph, the Photo 51 is still printed in most of the Biology textbooks.
Therefore, the correct option is B.
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A botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree. What should the botanist do first to study the interaction of these organisms in the ecosystem?
A. Remove the beetle population from the tree, and study them in the lab.
B. Identify the species of the beetle and the species of both trees.
C. Determine why the beetle is eating one tree but not the other.
D. Recommend a treatment that will keep the beetles from eating the trees.
ANSWER: B. identify the species of the beetle and the species of both trees (quizlet)
Answer: It's B,
"Identify the species of the beetle and the species of both trees."
The botanist should firstly study the interaction of these organisms in the ecosystem by identifying the species of the beetle and the species of both the trees. Therefore, the correct option is B.
What are species?A species is a group or organisms that can interbreed and produce viable offspring. The concept of species is used to define a unique type of organism, and it is the basic unit of biological classification.
Species are considered to be different from one another if they are unable to interbreed and produce offspring that can survive and reproduce. This definition of species is known as biological species concept.
In the case given in the question, the botanist should first identify the species of both the beetles and the trees. Then try to deduce a relationship between them which could clarify that the reason of the beetles feeding on those specific trees. Hence, the correct option is B.
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will a point mutation or a frameshift mutation have a larger impact on the protein coded for by the DNA?
Answer:
frameshift mutation (i think)
Explanation:
because it messes up the whole strand by deleting or inserting a base. honestly not 100% sure so take this with a grain of salt lol
Explain how an individual DNA mutation can become an adaptation in a population
Answer:
Explanation: Genetic variations that alter gene activity or protein function can introduce different traits in an organism. ... Over time, as generations of individuals with the trait continue to reproduce, the advantageous trait becomes increasingly common in a population, making the population different than an ancestral one.
Answer:
Due to the process of natural selection they gene can be matched and shown I need the offspring.
Explanation:
Why is so little of the energy passed on?
Answer:
Why is there less energy at each trophic level?
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.
Explanation:
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