Answer:
whats the question...............
Over time, a series of random occurrences can cause an allele to become more or less common in a population. This is called . When a population is severely reduced by an environmental disaster such as a fire, the result is a due to the reduced genetic diversity of the survivors. 3. The can occur if a small group of organisms migrates to a new location and becomes isolated from the rest of the population.
Answer:
Over time, a series of random occurrences can cause an allele to become more or less common in a population. This is called Genetic drift.
When a population is severely reduced by an environmental disaster such as a fire, the result is a Bottleneck effect due to the reduced genetic diversity of the survivors.
The Founder effect can occur if a small group of organisms migrates to a new location and becomes isolated from the rest of the population.
Explanation:
Genetic drift is an evolutive force. It is the random change that occurs in the allelic frequency of a population through generations. Its effects are harder in a small-sized population, meaning that the magnitude of this change is inversely related to the size of the original population.
Genetic drift results in some alleles loss -including the beneficial ones-, while some other alleles get fixated. Low-frequency alleles are the most likely to be lost. The changes produced by genetic drift accumulate in time and results in a loss of genetic variability within a population.
Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure -bottleneck effect- or because of a population split -founder effect-. The bottleneck effect most likely affects smaller populations.
The bottleneck effect -a case of genetic drift-, mostly affects smaller populations after the occurrence of a natural disaster or some human action -such as extensive hunting, for instance-. These events might act as a pressure that reduces significantly the number of individuals in a population. In these situations, some alleles are lost, and the survivors have a different genetic charge than the one of the original population. There might be a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. Founder effect refers to the origin of a new population from only a few individuals that are coming from a bigger-sized population. These founder individuals, which are carrying some of the genes of the original population, settle down in a new area and reproduce. The new and small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be lost by complete. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, genetic variability is reduced, and there exists the possibility of developing a peculiar allelic composition. When the number of individuals that originated the new population is low, the founder effect will be very extreme because the genetic drift effects are inversely proportional to the original number of individuals.What organisms play a similar role to earthworms in a forest?
Select all that apply.
dung beetle
jellyfish
eagle
barnacles
termites
Down bad lmk
Answer:
dung beetle, and termites
Explanation:
The _of an ecosystem is based on whether the population in the system destroys the natural resources of that system.
Answer:
Health sustainability
Explanation:
please mark brainliest
The Health sustainability of an ecosystem is based on whether the population in the system destroys the natural resources of that system.
What is an ecosystem?An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.
Thus, Health sustainability is the answer.
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James has installed soil sensors on his farms. What do soil sensors measure?
O A.
rainfall
OB.
fertilizer use
OC.
nutrients
OD. humidity
O E.
moisture content
Answer:
O E.
moisture content
Explanation:
How might the condition of a host affect how successful a pathogen is at causing disease?
Answer:
Within the host, pathogens can do a variety of things to cause disease and trigger the immune response. Microbes and fungi cause symptoms due to their high rate of reproduction and tissue invasion. This causes an immune response, resulting in common symptoms as phagocytes break down the bacteria within the host.
Explanation:
Which type of rock forms from chemical reaction of minerals
Answer:
Sedimentary rocks
Explanation:
Sedimentary rocks formed by the crystallization of chemical precipitates are called chemical sedimentary rocks. As discussed in the “Earth's Minerals” chapter, dissolved ions in fluids precipitate out of the fluid and settle out, just like the halite in figure 14.
Answer: Sedimentary rocks formed by the crystallization of chemical precipitates are called chemical sedimentary rocks.
what can you conclude about the connection between a leaf's size and the amount of sunlight it absorbs?
(a). The smaller a leaf is, the more sunlight it absorbs.
(b). The larger a leaf is, the more sunlight it absorbs.
(c). The connection between the size of a leaf and the amount of sunlight it absorbs cannot be predicted.
(d). Large leaves and small leaves absorb about the same amount of sunlight.
Why isn't medical and chemical waste placed in landfills ? A. It would contaminate the land and water with dangerous poisons B. It would cause the landfills to fill up too quickly C. It would prevent refuse from breaking down over time D. It would contribute to global climate change
Answer:
A. It would contaminate the land and water with dangerous poisons
Explanation:
Putting medical and chemical waste into landfills has extremely dangerous consequences to the environment and public health.
If they were put into landfills, these toxic wastes would leech into the soil and groundwater below them.
These toxins can accumulate over time, and harm plants and animals.
Humans may also absorb these toxic chemicals.
So, the correct answer is A. It would contaminate the land and water with dangerous poisons
Answer:
A
Explanation:
The water and land will become contaminated which will harm or endanger all the living organisms and us humans around it. Because they use the water and land source.
PLEASE HELP , WILL GIVE BRAINLIEST. In Mendel’s first experiment, he crossed tall plants with short plants and found tall plants were dominant to short plants. Draw a Punnett square to describe this experiment and list the genotypes and phenotypes of the offspring.
PLEASE HELP ME ASAP GIVING AWAY 13 POINTS!!!!!!!!!!
Answer:
planet3 is good for human so yah
hope it helpedOf the five things that you listed in question 1, which one do you think holds the most promise for making a real difference in environmental quality over the long term.
The Five Things are Transport, Agriculture, Culture, Economics, and Energy
Answer:
agriculture
Explanation:
Answer:EconomicsExplanation:
Rainforests are located in the latitudes that have the classification
(A) Continental
(B) Subarctic
(C) Temperate
(D)Tropical
Answer:
D. Tropical
Explanation:
Rainforests are located in the tropical latitude/climate.
What weather conditions would exist in El Paso based on the weather map seen here?
A)
cold temperatures, sunny skies.
B)
cold temperatures, cloudy skies
warm temperatures, very cloudy, and heavy rain.
D)
warm temperatures, increasing clouds, and showers.
Answer: b
Explanation: i need the points
Answer:
D, warm temperatures, increasing clouds, and showers
Explanation:
I answered D and it was correct.
What is the difference between acute and chronic poisoning
Answer:
Acute poisoning is poisoning on one occasion, which means it doesn't take very long to get symptoms. While chronic poisoning is is long term,Which would mean it would take a while to get symptoms.
Explanation:
Can anyone help p,ease
Answer:
im not understanding :(
Explanation:
I need to know the answer to this question please
Answer:
First box- Crest
Second box- Trough
Third box- Amplitude
Fourth box- Wavelength
In winter, flocks of birds made up of different
species of birds can be observed foraging
together. Flocking together allows the birds
to find more food and be more alert to danger.
The birds all need to consume the same scarce
resources, though. What two behaviors do these
mixed flocks display?
A competition and commensalism
B mutualism and competition
C. parasitism and mutualism
D predation and commensalism
Answer:
competition and commensalism
Explanation:
Bacteria which convert nitrogen gas into bio-available forms of nitrogen, such as ammonia and nitrate, are known as
O A. nitrogen emitting bacteria
O B. carbon emitting bacteria
C. nitrogen fixing bacteria
D. carbon fixing bacteria
Answer:
A. nitrogen emitting bacteria
Which characteristic distinguishes the five groups of fungi
Answer:
don't
Explanation:
here is your answer
Answer:
Don't
Here is your answer
One side of section of DNA is shown below. A-G-C-T-T-G-A Which of the following would be the matching side of the section of DNA?
F A-C-G-T-T-C-T
G T-C-G-A-A-C-T
H A-G-C-T-T-G-A
J C-T-A-G-G-A-G
Answer:
G) TCGAACT
Explanation:
Which two systems are used in order for your muscles to churn the stomach and aid in digestion
Answer:
There's longitudinal,circular and obligue (diagonal)
Explanation:
These muscles allow the stomach to churn the food during digestion.
If the temperature of the tissue samples used in the experiment had been raised from 37°C (body temperature) to 50°C, the results would have been different because
Answer:
75%sorry i need to complete the steps
HELP! A 20-kg bag of rice dropped from an airplane. What is the gravitational force on the bag? Acceleration due to gravity is 9.8 m/s/s.)
10.02 N
19.6 N
20.8 N
196 N
Answer:
20.8
Explanation:
I took it and it was right
196N is the gravitational force on the bag. So, the correct option is D.
What is gravitational force?Any two items in the universe can be attracted to one another by the gravitational force. All mass-containing objects are drawn towards one another by this attraction, which also keeps the moon in its orbit around the Earth and the planets in their orbits around the sun.
The mass of the two objects and their separation determine the gravitational force's strength. The force of gravity between two objects is directly proportional to their masses and inversely correlated to the square of their distance, according to Newton's law of universal gravitation.
The gravitational force on the bag can be calculated using the formula:
force = mass x acceleration due to gravity
Plugging in the given values, we get:
Force = 20 kg x 9.8 m/s/s
Force = 196 N
Therefore, the correct option is D.
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The antlion is a ______
Explanation:
Antlion, (family Myrmeleontidae), any of a group of insects (order Neuroptera) that are named for the predatory nature of the larva, which trap ants and other small insects in pits dug into the ground. Antlions are found throughout the world, primarily in dry, sandy regions.
"The human body. It is an organism. It is made up of cells, tissues, organs, and organ systems," said Ms. Garcia to her students. "I can
see tissues, my skin!' said Allie. "But how do I know I am made of cells too?' The students carried out an experiment to prove to Allie
that they were indeed made of cells. Here is a photo of their lab activity. What did they do?
A) They took a piece of the skin from their fingertips and looked at the tissue using a magnifying glass.
B) They dissected their finger tips! They pulled off a piece of skin and looked at it with the dissecting scope.
C) They scraped the inside of their cheek and smeared the end of the toothpick on a glass slide. They added a drop of stain and then looked at the slide using the light microscope.
D) They scraped the inside of their cheek and smeared the end of the toothpick on a glass slide. They added a drop of stain and then they used an IPhone to take a picture of the slide to share with the class.
The answer is C. The answer is C. The scraped the inside of her cheek and smeared the toothpick on a glass slide. They added a drop of stain and then looked at the slide using the light microscope. I took the USA Test Prep
Answer:
I believe the answer should be C
happy learning!
--Applepi101
59:53
The United Nations Environment Program regulates the environmental policy for all countries.
Please select the best answer from the choices provided
ОТ
OF
Answer:
The United Nations Environment Program regulates the environmental policy for all countries. ... Other countries have no environmental issues.
Explanation:
thank me later
Yeast causes faster rising than baking powder or baking
soda.
O True
O False
Answer:
true
Explanation:
if I'm wrong ok it's not my problem
PLEASE HELP ASAP PLEASE PLEASE PLEASE 10. Julie has red hair while Billy has brown hair. Explain how the differences in their chromosomes can account for this difference in appearance
Answer:
Hair colour is casue by of DNA strand contained in the chromosome
Explanation:
A simplified answer to this is:
A chromosome contains a double stranded DNA, and DNA carries genetic information and accounts for gene expression. plus dna is unique to each individual.
rashid is conducting a seminar on the importance of coral reefs which point should he include
Answer:
Protect coastlines from storms, erosion and provide habitat.
Explanation:
Coral reefs protect coastlines from storms and erosion as well as provide a habitat for thousands of aquatic animals. These points rashid must include in his seminar. Coral reefs are very important for the marine ecosystem because it can save the soil from erosion and decreases the intensity of storms by acting just like barrier. It provides food as well as living place for many organisms so these point are very important to be included in the seminar.
Answer:
that corals provide economic assistance to coastal populations through fisheries
Explanation:
Select a hypothesis above that would help restore equilibrium and explain your reasoning.
Answer:
analize data and draw a conclusion