Natural selection refers to the procedure where the species better amended to their surrounding appear to survive and generate more offspring. Natural selection refers to one of the mechanisms that make modifications in the frequencies of genes in populations and thus, it is the mechanism of evolutionary change.
However, the phenomenon of genetic drift and natural selection cannot take place unless and until there is a genetic variation, that is unless some individuals are genetically distinct from others.
If a cell has 14 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis?
Why is this important?
Answer: After mitiosis, each daughter cell will also have 12 chromosomes. Cytokinesis is just the last stage of telophase, where the cell completely forms the two daughter cells. Telophase does not form chromosomes.
Explanation:
If a cell has 14 chromosomes, there are 14 chromosomes in each daughter cell.
What happens in Mitosis?There are four stages of mitosis: prophase, metaphase, anaphase and telophase.
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres.
2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)
3) Anaphase: sister chromatids are pulled to opposite poles of the cell
4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin.
If a cell has 14 chromosomes, there are 14 chromosomes in each daughter cell.
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How are the three international conflicts similar and how are they different?
Answer:
what's the question? It is not showing anything expect for "How are the three International conflicts similar and how are they different."
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Describe the following natural disasters:
• Hurricanes:
• Tornadoes:
• Earthquakes:
• Floods:
• Wildfires:
Answer:
Hurricanes are large, swirling storms. They produce winds of 119 kilometers per hour (74 mph) or higher. That's faster than a cheetah, the fastest animal on land. Winds from a hurricane can damage buildings and trees.
tornado is a violent rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable of tremendous destruction with wind speeds of up to 300 mph. They can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees.
Earthquake is a term used to describe both sudden slip on a fault, and the resulting ground shaking and radiated seismic energy caused by the slip, or by volcanic or magmatic activity, or other sudden stress changes in the earth.
A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health.
Wildfires are fires that burn out of control in a natural area, like a forest, grassland, or prairie. They often begin unnoticed. They spread quickly, and can damage natural resources, destroy homes, and threaten the safety of the public and firefighters. Humans cause most wildfires.
Hurricanes: Hurricanes form when warm air over the water rises, it is replaced with cool air, if there is enough warm water storm clouds and wind speed can grow and cause the hurricane.
Tornadoes: Tornadoes form when warm air collides with cold air.
Earthquakes: a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
Floods: an overflowing of a large amount of water beyond its normal confines, especially over what is normally dry land.
Wildfires: A wildfire, bushfire, wildland fire or rural fire is an unplanned, unwanted, uncontrolled fire in an area of combustible vegetation starting in rural areas and urban areas
You must draw a Punnett square and work out these problems to get the correct answers. In cats, long-hair (H) is dominant to short-hair (h). One cat is heterozygous for its long-hair and its mate has short-hair. First, use a Punnett square to determine the genotypes, phenotypes and probability of their possible offspring.
Answer:
The correct answer is -
Genotypes: 1 heterozygous dominant: 1 recessive
Phenotypes: 1 long hair cat: 1 short hair cat
probability: 50% chances of both long and short hair cats
Explanation:
It is given that long hair is a dominant represented by H, over the short hair represented by h. In the cross of a heterozygous cat for long hair with a cat with short hair, would produce H, h and h, h gametes respectively.
Cross: Hh × hh
H h
h Hh hh
h Hh hh
In this Punnett, there are two heterozygous long hair offspring produced and two short-hair cats.
So, Genotypes: 1 heterozygous dominant: 1 recessive
Phenotypes: 1 long hair cat: 1 short hair cat
probability: 50% chances of both long and short hair cats
what is a tetrad? snd why are they important feature of mitosis
Answer: a group or set of four
Explanation: tetrad occurs during the first phase of meiosis
Answer:
a group or set of four
Explanation:
(brainliest if right!) How is the dispersive model different from the semiconservative model of DNA replication?
1. In the dispersive model, each strand of both daughter molecules contains a mixture of old and newly synthesized DNA, and in the semiconservative model, each new double helix consists of one old and one new strand.
2. In the dispersive model, the old double helix is degraded, and in the semiconservative model half of its nucleotides are used in the construction of two new double helices.
3. In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
4. In the dispersive model, one strand of the new double helix is made of DNA, and in the semiconservative model the other strand is made of RNA.
Why do candles extinguish when a lid is closed?
Answer:
fire needs oxygen to burn, when you take that oxygen away by putting a lid on it the fire goes out.
Explanation:
Answer & Explanation:
candles extinguish when a lid is closed because fire needs oxygen to sustain its energy so when the lid is closed no oxygen is coming in, so the candles with the fire slowly extinguish
can someone help plsssssssssssssssss
Answer:
The body will not retain enough nutrients.
Explanation:
Hope this helps!!
Adenosine triphosphate, or ATP, is primarily used as
in living organisms.
O A.
a blood coagulant
O B.
a source of energy
O C.
a reproductive enzyme
O D.
a muscle relaxing hormone
Answer:
A source of energy
Explanation:
What does mitosis do that the cell would do wrong if it just split down the middle in cell division?
Click the link which illustrates tectonic plates and other features. Use this information to answer the question.
Where are most earthquakes found?
in the middle of continents
under the ocean only
along plate boundaries
along the equator
Answer:
Along plate boundaries.
Explanation:
They are always moving and when they suddenly slide or move, the ground shudders, making an earthquake.
Answer:third option
Explanation:edge
what are some examples of viruses
Answer:
Corona, Ebola, Chickenpox, Flu, Herpes, Infectious mononucleosis, etc
Explanation:
Explanation:
Plant viruses: tobacco virus.
Animal viruses: Covid-19, mumps, polio and HIV.
Mycoviruses: viruses that infect fungi.
Oncoviruses: Human Papilloma Virus which causes cervical cancer.
Bacterial viruses: bacteriophages.
Recessive traits appear only when an organism is
Answer:
If it carries two identical copies of the recessive trait.
Explanation:
pls pls pls help!! i’ll give brainliest
Answer:
materials move against a concentration gradient
i need help with this ASAP
Answer:
i would love to help you, but all of the answers are on the map...
Explanation:
:)
PLEASE PLEASE PLEASE HELP ME WITH THIS!! ONCE I FIGURE OUT HOW I'LL MARK BRAINLIEST (or however you spell it)!!
Answer:
1st segment: 3rd answer choice
2nd segment: 1st answer choice
3rd segment: 4th answer choice
4th segment: 2nd answer choice
5th segment: 5th answer choice
1. Janica placed an ice cube in her thermos of hot coffee. Which of the following
describes the change to the energy in the system?
A. Energy was transferred from the coffee to the ice cube, but the total energy in the
system remained constant.
B. Energy was transferred from the ice cube to the coffee, but the total energy in the
system remained constant.
C. Energy was transferred from the ice cube to the coffee, and the total energy in the
system decreased.
D. Energy was transferred from the coffee to the ice cube, and the total energy in the
system increased.
Answer:
I think A
Explanation:
based on what you have just read why is studying atoms and their parts and particles helpful to people
Answer:
Studying atoms helps people by providing research to common problems found in our environment, universe, and ourselves. Such as cleaning up oil spills, identification of atoms in our universe, etc.
Explanation:
What are two reasons why cell division is important to living things?
Answer:
Explanation:
repair of damaged tissues healing and regeneration,Hope this helps
What id one watt equal to?
describe how you could determine the population size of a specific type of plant in a large forest without counting all of the plants
Answer:
The study of living and nonliving components of a system can be best described as an. ecosystem ... Describe how you could determine the population size of a specific type of plant in a large forest without counting all of the plants
It is possible to determine the population size of a specific plant in a forest by counting the number of the specific plant in a small section of the forest and then multiply this by the total area.
This technique is known as quadrat sampling.
Quadrat sampling is a methodology by which organisms of a sample of the habitat are directly counted and then this value is used to calculate the total population of an area, i.e., the total number of individuals/organisms in a given area.
In this case, a quadrat delimits a small area in which the specific plant can be estimated.
The abundance of a population in a particular area can be estimated by using the number found per quadrat and then multiply this value by the total size of the area.
Quadrat sampling is a very useful methodology for the study of biodiversity.
In conclusion, it is possible to determine the population size of a specific plant in a forest by counting the number of the specific plant in a small section of the forest and then multiply this by the total area.
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WILL GIVE BRAINLIEST
How does the process of natural selection account for the diversity of organisms that Darwin observed on the Galapagos Islands?
Answer:
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
Explanation:
I would also add in how birds had to adapt with different beak lengths and sizes in order to be able to get the food type that was most abundant. Natural selection was abundant in this case if one food source (say small seeds) was scarce, a bird with a small beak 1. Had very little if no small seeds to eat and 2. If there were large nuts that required breaking open (ability with birds for larger beaks to do so), the small bird could not break them open and then would unfortunately probably starve to death. Thus, natural selection occured so the birds with the large beaks were able to carry on their traits while the birds with the small beaks did not have as great of an opportunity (if not opportunity) to carry on their traits.
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
Shamus complains that he isn’t feeling well, he thinks a cold/flu is coming on. He takes cold medicine and lays down. In an hour or two, he decides the medication isn’t working, so he takes another dose, thinking more will work better. Shamus takes one more dose of cold medication, 3 hours after his second dose and finally settles down for bed. In the morning, Shamus is found dead in his bed by his roommate.
Answer in terms of livor and rigor, what stages and where in the body is it present
Answer:
The common cold and the flu may seem very similar at first. They are indeed both respiratory illnesses and can cause similar symptoms. However, different viruses cause these two conditions, and your symptoms will gradually help you differentiate between the two.
Both a cold and the flu share a few common symptoms. People with either illness often experience:
a runny or stuffy nose
sneezing
body aches
general fatigue.
As a rule, flu symptoms are more severe than cold symptoms. Another distinct difference between the two is how serious they are. Colds rarely cause additional health conditions or problems. The flu, however, can lead to sinus and ear infections, pneumonia, and sepsis. To determine whether your symptoms are from a cold or from the flu, you need to see your doctor. Your doctor will run tests that can help determine what’s behind your symptoms. If your doctor diagnoses a cold, you’ll likely only need to treat your symptoms until the virus has had a chance to run its course. These treatments can include using over-the-counter (OTC) cold medications, staying hydrated, and getting plenty of rest.If you have the flu, you may benefit from taking an OTC flu medicine early in the virus’ cycle. Rest and hydration are also very beneficial for people with the flu. Much like the common cold, the flu just needs time to work its way through your body.
Explanation:
Distilled water (H2O) can be made from tap water by removing dissolved minerals and various other chemicals. How should each type of water be classified
Shadows happen when an object:
Answer:
c: allows some light to pass through
Explanation:
makes the most sense
Answer: A
Explanation: Shadows are made by blocking light. Light rays travel from a source in straight lines. If an opaque (solid) object gets in the way, it stops light rays from traveling through it. This results in an area of darkness appearing behind the object.
During cellular respiration, the bonds of food molecules are broken, so energy can be released to fuel other cellular processes. In order for this to occur, which of the following statements must be true? A. The energy in the new compounds that are formed must be equal to the energy in the bonds of the food molecules. B. New compounds with lower-energy bonds must be formed when the high-energy bonds in food molecules are broken. C. New compounds with higher-energy bonds must be formed when the low-energy bonds in food molecules are broken. D. The new compounds that are formed must be more complex than the food molecules that were broken down.
Answer:
The correct answer is B. New compounds with lower-energy bonds must be formed when the high-energy bonds in food molecules are broken.
Explanation:
During cellular respiration the bonds of food molecules are broken so energy can be released to fuel other cellular processes in order for this to occur which of the following statements must be true a the new compounds that are formed must be more complex than the food molecules that were broken
Which of the following correctly contrasts artificial and natural selection?
A Humans select traits to be inherited in artificial selection, while natural forces select traits to be inherited in natural selection
B. Artificial selection does not include the inheritance of traits, while natural selection requires the inheritance of traits
OC. In natural selection only physical traits are inherited, while in artificial selection only behavioral traits are inherited
O D. Natural selection only occurs after sexual reproduction, while artificial selection only occurs after asexual reproduction
Answer: A. Humans select traits to be inherited in artificial selection, while natural forces select traits to be inherited in natural selection.
Explanation: Good luck! :D
Answer:
A.
Explanation:
I just finished this quiz
what does cellular respiration require
Answer:
Cellular respiration is the cellular process which transfers chemical energy from glucose to ATP.
Explanation:
Oxygen is essential to have efficient cellular respiration; most organisms need oxygen for a single purpose: to release energy from food for use by cells.
Plants experience_____
thigmotropism when they use a fence to help stabilize their stems.
A. positive
B. negative
frank has type A blood (AA or AO) and margarita has type B (BB or BO) blood. They have a new baby. Vinnie, with type O blood. Is this possible or should frank accuse margarita of cheating?
Answer:
It is technically possible, if and only if, both parents have AO and BO blood.
Explanation:
the only way (most of the time) a child can get O blood is if both genes accepted by the parents are O. That would mean both parents would have to have O recessive genes.