The key difference is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success. The correct option is C.
What is genetic drift?
Genetic drift is the change in frequency of an existing gene variant in the population due to random chance. Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. It could also cause initially rare alleles to become much more frequent, and even fixed.
Natural selection is a natural process in which only the superior characteristics are moved to the next generations.
Therefore, the correct option is C. The key distinction is that in genetic drift allele frequencies change by chance, whereas in natural selection allele frequencies change by differential reproductive success.
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ecosystem contain both blank and blank parts
Explanation:
Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts.
Every ecosystem contains both biotic and abiotic components, such as the biotic component, which contains the living forms such as the animal and the plant, and the non-living components, which are called the abiotic component.
What role does the ecosystem play on Earth?There are numerous ecosystems on Earth, each with its own set of functions and living forms, but these are essential for human survival as they support a wide variety of plant and animal species, thus maintaining the biodiversity of the earth. By absorbing and storing carbon, forests, oceans, and wetlands help to regulate the earth's climate by managing the carbon cycle and regulating the climate.
Hence, every ecosystem contains both biotic and abiotic components, such as the biotic component, which contains the living forms such as the animal and the plant, and the non-living components, which are called the abiotic component.
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What is the purpose of an outline?
to list the main topics and show the order they will appear in
to show the number of sentences in each paragraph
to help you remember key words about your topic
Answer: to list the main topics and show the order they will appear in
Explanation: Outlines are intended to help a person organize a paper and help the paper flow well.
Answer:
to list the main topics and show the order they will appear in
Explanation:
What is the scale that
measures the strength of an
earthquake
Answer: The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.
Answer:
The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.
Explanation:
Genes are strands of
found on chromosomes in the nucleus of a living cell.
A
mutations
B
DNA
C
minerals
D
cells
Answer:
b)DNA is the correct answer
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Replication is said to be semi-conservative. What does this mean about the chain being made?
Half is_______________________________, the other half is_________ __________
Answer:
Explanation: Replication is a semiconsecutive process this means that the strands of the DNA molecule separate to form two separate templates which will then combine with nucleotides following the complementarity base sequence to form two new daughter DNA
Kelp forests are unique and diverse coastal ecosystems in the ocean. How would a
decrease in biodiversity in these ecosystems, due to changing climate, affect the larger biosphere? please help!!!
Explanation:
Kelp forests are the anchor of nearshore ocean wildlife communities across the U.S. West Coast and northeast, sustaining marine biodiversity by providing shelter, habitat and even food for an array of fish and invertebrates.
The wing of a bird and the leg of a horse are very different looking structures. Although they look different, bird wings and horse legs are very similar in the arrangement of the bones that make up the limb. Which term is used by scientists to describe structures that look different on the outside but are actually similar in construction and develop from the same embryonic tissues? es -0) A) common descent B) analogous structures vestigial structures D) homologous structures Answer:
Answer: Homologous structures
Explanation: They are structures which have similarities in various organisms but carry out opposite functions. This is the opposite of analogous structures
1. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?
»» (c) Biological names can be written in any language.
EXPLANATION:➱ Biological names are derived either from Latin language or are latinised. This is because Latin language is a dead language and therefore it will not change in form or spellings with the passage of time.
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In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?
A. 2%
B. 49%
C. 16%
D. 35%
Answer:
D
Explanation:
34/96= 35%
The mathematical rule of three can be used to take probabilities. In the exposed example, the approximate probability of a moth being black is 35% (Option D).
------------------------
Available data:
47 moths are brown15 moths are yellow34 moths are blackThe total number of individuals in this population equals the addition of brown, yellow, and black individuals.
This total number of individuals equals 100% of the population.
So to get the probability of a moth being black, we can just perform a rule of three.
To do it, we need to get the percentage of black individuals in the current population.
96 moths ------------------------- 100% population
34 black moths ----------------- X= (34 x 100) / 96
=35.41 ≅ 35% of the population
The approximate probability of a moth being black is 35%.
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One scientist kept 20 grams of a radioactive material in a container. What will be the mass of the radioactive material left in the container after 2 half lives? (10 points)
Group of answer choices
4 grams
5 grams
10 grams
40 grams
Answer:
It's 5 grams
Explanation:
After 2 half lives that would mean a quarter of the original, because one half times one half is one fourth. 20 times one fourth is 5 grams.
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Cross an individual who is heterozygous for baldness with one who is hom0zygous recessive. If the children were all boys, what would the phenotypic ratio for the above cross be? What would the phenotypic ratio be if they were all girls?
Proteins make genes. True or False? Why?
Answer:
False
Explanation:
Because Genes make protein
But the genes in your DNA don't make protein directly. Instead, special proteins called enzymes read and copy (or "transcribe") the DNA code. The segment of DNA to be transcribed gets "unzipped" by an enzyme, which uses the DNA as a template to build a single-stranded molecule of RNA. Like DNA, RNA is a long strand of nucleotides.
This transcribed RNA is called messenger RNA, or mRNA for short, because it leaves the nucleus and travels out into the cytoplasm of the cell. There, protein factories called ribosomes translate the mRNA code and use it to make the protein specified in the DNA recipe.
If all this sounds confusing, just remember: DNA is used to make RNA, then RNA is used to make proteins-and proteins run the show.
The Cell's Secret Code
Some genes act as instructions to make molecules called proteins.
Answer:
False.
Explanation:
Since genes make protein
But proteins are not directly formed by the genes in your DNA. Instead, the DNA code is read and copied (or transcribed) by special proteins called enzymes. An enzyme that uses DNA as a template in order to build a single-stranded RNA molecule "disconnects" the DNA segment being transcribed. RNA is an extensive nucleotide beam, like DNA.
The messenger RNA, or mRNA, is for short transcribed, as it leaves the nucleus and moves into the cell's cytoplasm. The mRNA code is translated in protein plants named ribosomes and used to produce the protein specified in the DNA recipe.
If everything sounds confusing, just remember: RNA is made using DNA, and the proteins are being used as a show by RNA.
The Secret Code of Cell
Certain genes are used to make protein molecules.
Every organism requires a set of instructions that specifies its traits. This information is carried with the cells of the organism. Which set of statements BEST describes hereditary information in eukaryotic cells? Group of answer choices
Answer:
This question lacks options, the options are;
A. Genes are made up of chromosomes and both are found in the cell’s cytoplasm.
B. Chromosomes are made up of genes and both are found in the cell’s cytoplasm.
C. Genes are made up of chromosomes and both are found in the cell’s nucleus.
D. Chromosomes are made up of genes and both are found in the cell’s nucleus.
The correct answer is D.
Explanation:
As rightly stated in this question, every living organism requires a set of instructions that specifies its traits. These set of instructions are embedded in a unit called GENE. Genes hold information needed for the survival of a cell in an organism.
These genes are located on a structure called DNA, which are folded or packaged into another structure called CHROMOSOMES. Each chromosome, hence, contains genes that are the unit of inheritance of a cell. In eukaryotic organisms, the gene is found on a chromosome, which is located in the NUCLEUS of the cell.
Which gas was most likely not present in creating the amino acids of early Earth's waters of the past?
ammonia
sulfur
hydrogen
nitrogen
Answer: the answer is sulfur.
Explanation: I took the test
An experiment was designed to test the effect of ultraviolet light on the growth of mold spores. A sample of mold spores was divided into two groups. The groups were grown under the same conditions, except that group A was exposed only to ultraviolet light and group B was grown in total darkness. What is the purpose of group B being grown in total darkness?
To limit bias
It is the dependent variable
It is the control group
To add an alternative variable
Answer:
C
Explanation:
Conservationists help to restore ecosystems. Which activity will positively affect the abiotic conditions of an ecosystem?
A.
Keeping lakes and rivers free of pollution.
B.
Planting new trees to provide food for animals.
C.
Monitoring the ecosystem for bacterial pathogens that can cause illness.
D.
Mating endangered animals in captivity and restoring them to their natural habitat.
if a parent cell starts with 22 chromosomes how many chromosomes will each daughter cell have after mitosis
Answer:
For mitosis, the DNA content of the daughter cells and the mother cell will always be identical. Since the number of cells have doubled, so has the DNA. The 16 chromosomes in the mother cell will be duplicated, then the duplicates split and evenly divided into the daughter cells. The 16 chromosomes in each daughter cell will be non-duplicated at first.
Explanation:
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Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell.
What is mitosis?
The division of a cell of the body that results in two cells, each with the same number of chromosomes as the original cell.
What is daughter cell?
The daughter cells from mitosis are called diploid cells. Diploid cells have two complete sets of chromosomes.
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Describe the relationship among the agents of disease, the infectious dose, and the health of a host.
Answer: Parasitism, where only an organism benifts while hurting the other, or Commensilism when treating genetic disorders.
Explanation:
Diseases mostly hurt an organism, but in some cases they can be used to treat genetic disorders so Parasitism and Commensalism can be used depending on the question. But an infectious dose to a healthy host will cause illness or minor setbacks to the organism.
Which part of the digestive system food nutrients move into the blood by diffusion
Answer:
Small Intestine
Explanation:
Please help does someone know anything about this
Acids are identified by hydrogen or hydroxide?
Answer:
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.
Explanation:
List 3 examples of something that have evolved over time.
Answer:
peppered moth- became darker because of pollution
darwins finches- beaks became smaller over time to eat the smaller nuts/seeds left
deer mice- became lighter being as their surroundings changed/ones that moved from forrests
Answer:
Peppered mothDarwin's finchesDeer miceExplanation:
These are the 3 examples of something that have evolved over time.
1. Which weather station model above would most likely have snow? ___________
2. Which weather station model above would most likely have rain? ____________
3. Which weather station above has the highest air pressure? ____________
4. Which weather station model above has the highest wind speed?_________
Answer:
1. Station B
Station B has one of the lowest temperatures of 32°F(top left) which is a temperature that snow can form at. It also has full cloud cover which is something that station C does not have and as clouds are needed for snow, station B is most likely to have snow.
2. Station A
Station A has the highest dew point at 75 (bottom left) which means that it has the highest humidity and so is the most likely to have rain. That along with a full cloud cover (shaded circle), means there are clouds for rain to fall from.
3. Station B
Has the highest pressure at 998.
4. Station C
Wind speed is measured by the lines protruding from the circle and for this simplistic model, the more lines it has, the faster the wind is going. Station C therefore has the fastest wind speed.
How can black hole be destroyed?
Answer:
Eventually, in theory, black holes will evaporate through Hawking radiation. But it would take much longer than the entire age of the universe for most black holes we know about to significantly evaporate.
Explanation:
Which of the following contributes to the diversity of an ecosystem?
Increased keystone species
Reduced species richness
Increased invasive species
Increased foundation species
Answer:
Increased keystone species
Explanation:
An organism is a keystone species when it contributes to the definition of a given ecosystem such that the absence of the keystone species in an ecosystem, the ecosystem will change dramatically or be gradually wiped out
The effect of the keystone on its environment is unevenly large when compared to its abundance relative among other organisms within the ecosystem
The keystone is therefore, a prime source of balance of nature, diversity and well-being of the ecosystem
Therefore, the option that contributes to the diversity of the ecosystem is;
Increased keystone species.
help please will mark brainlist answer
Answer:
Question 2 is option 2. It is the only one that makes sense and it says sediment sin it.
Explanation:
5. Cutting down trees in a forest alters the habitat of the organisms living in the forest.
True OR False
Answer:
true
Explanation:
i know things
Cutting down trees in a forest alters the habitat of the organisms living in the forest. The given statement is true.
What is habitat?
Habitat is known as the place where the animals lives and survive the place is known as the habitat. Cutting down the trees is known as the deforestation. The term migration has been defined as when the birds, animals, or human beings leaves the native place and move towards a new place due to weather or other physical condition is known as migration. Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
The stage of dormancy is the stage when seed gets closed and not able to germinate as it closes its outer wall. The term hibernation is defined as the particular time period in which the organism hybernate himself for a period of time when the weather or the outer environment is not safe, or fit for his survival.Generally, when it is too much cold the birds of that particular area migrated to the place where they found suitable temperature for their survival.
Therefore, Cutting down trees in a forest alters the habitat of the organisms living in the forest. The given statement is true.
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:) What does the abbreviation "mya" for?
In science, it mean 'Million Years Ago'
It could also be used in astrology and biology
Answer: It stands for Million Years Ago
Explanation:
In this part of the laboratory exercise, you will learn how to read a weather station model. Using your Earth Science Reference Tables, fill in the data tables below each station model.
Answer:
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Explanation:
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You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.