The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths had light colouration, which effectively camouflaged them against the light-coloured trees and lichens upon which they rested. However, due to widespread pollution during the Industrial Revolution in England, many of the lichens died out, and the trees which peppered moths rested on became blackened by soot, causing most of the light- coloured moths to die off due to predation. At the same time, the dark-coloured moths flourished because of their ability to hide on the darkened trees. Since then, with improved environmental standards, light-colored peppered moths have again become common, but the dramatic change in the peppered moth's population has remained a subject of much interest and study Which type of selection is illustrated by the peppered moth's during the Industrial Revolution?
Answers
Answer:
Directional selection
Explanation:
The phenotype of individuals and the environment where they live, interact and determines the genes´ destiny in space and time. The result of this interaction and the gene destiny is Natural Selection. Natural selection selects beneficial alleles and increases their frequency in the population.
Among the different types of natural selection, we can find "directional selection".
Directional selection increases in the proportion of individuals with an extreme phenotypic trait, in this case, dark moths color. This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example, the moth population must be adapted to its environment. The coloration is related to survival strategies. In the beginning, they expressed light coloration useful to camouflage and to avoid predators while resting on their lighted-substrate (lichens and light-colored trees). After the severe environmental impact of the Industrial Revolution, the environment changed. This change acted as a selective pressure. Lichens died, and trees became darker. Light moths were exposed and died after predation. Probably at one point of the evolution, the gene for color mutated, and dark-colored moths appeared. By natural selection, the mutation got fixed. This example reflects directional selection because the population turned from light color to dark color.
In the attached files you will find two graphs expressing directional selection.
Related Questions
What is the meaning of the term disturbance?
Group of answer choices
an event that makes a species extinct) A
an event that changes a community) B
an event that decreases resource availability) C
an event that kills organisms) D
Answers
Answer:
B
Explanation:
Using the diagram below, identify the correct chemical formula for the molecule
shown.
Answers
Answer:
p(OH)30
Explanation:
add the OH all together
Connor placed a piece of celery plant in a cup of colored water. The diagram shows the results of the experiment.
Which structure in the celery plant was most likely responsible for making the leaves turn red?
phloem
pollen
embryo
xylem
Answers
Answer:
xylem
Explanation:
The xylem is responsible for the transport of water.
Answer:
XYLEM is the answer for you :)
Explanation:
please help!!!!!!!!!!!!!!!!!!!!
i will award the best answer with brainlyist
Answers
The diagram above shows how sea breezes form clouds in coastal areas. Which map below shows a cloud pattern that would most likely result from the sea breeze cycle in late afternoon?
Answers
Answer: Map H
Explanation:
Sea breeze cycle clouds form in an area where land and a body of water such as an ocean or sea come into contact with each other so maps G and J are not possible as these formed over land and away from any coastlines.
These clouds form over land as it is on land that the sea breeze would be warmed by the land temperature and then rise up. Map F is therefore incorrect as those clouds are over the sea.
Map H is the most plausible answer as the clouds are right over land and the area is next to the ocean.
Which of the following is true during the autumn?
O A. Sunset gets later each day.
O B. Sunrise gets earlier each day.
O C. More hours are added to the day.
O D. Sunrise gets later each day.
SUBMIT
Answers
Answer:
the only decently right answer would be C.
Explanation:
I don't think any of these actually have to do with autumn, but I guess C is the best answer
Answer: answer d on apec
Explanation:
How does the nucleus control which proteins are made by the ribosomes?
1. It controls which genes get used.
2. It controls the number of ribosomes.
3. It controls the speed with which proteins are made.
4. It controls the order in which proteins are made.
Answers
Answer: it controls genes that get used.
Explanation:
3. Any spread of particles from area of high concentration to area of lower 1 point
concentration. This question has more than one answer. *
Diffusion
Active Transport
Osmosis
U Phagocytosis
Passive Transport
Facilitated Diffusion
Pinocytosis
Receptor-Mediated endocytosis
Exocytosis
Answers
Answer:
Diffusion
Osmosis
Passive transport
A population of lizards lived in an ecosystem that was prone to flooding. After many generations, most of the lizards in the population had
longer legs than their ancestors, which helped them flee from floods. Which statement best explains this change?
A: the lizard genes spontaneously mutated to address the flooding threat
B: Genetic variation among lizard limbs allowed for natural selection to occur
C: The limbs were artificially selected because humans probably caused the flooding
D: The lizards with longer limbs cloned themselves, ensuring survival of the species
ILL MARK BRAINIEST PLS HELP
Answers
Answer:
B
Explanation:
Adaption occurs though natural selection and genetic variation
B: Genetic variation among lizard limbs allowed for natural selection to occult
Which of the following statements is FALSE? *
The Rock Cycle is happening all the time on Earth.
Some processes of the Rock Cycle take a long time.
O All rocks were once Metamorphic Rocks.
O Most rocks on Earth are Igneous Rocks.
Answers
Answer:All rock were once metamorphic rocks
Explanation:
Melted rock deep inside Earth forms igneous rocks. Sand, silt, plant and animal skeletons make sedimentary rocks. Heat and pressure underground convert rocks into metamorphic rocks. Therefore, option (C) is correct.
What is rock cycle?The rock cycle is a web of processes that outlines how each of the three major rock types—igneous, metamorphic, and sedimentary—form and break down based on the various applications of heat and pressure over the course of time. Igneous rocks are rocks that are formed by volcanic eruptions, while metamorphic rocks are formed when heat and pressure are applied to preexisting rocks. Shale, a type of sedimentary rock, can be transformed into slate with the use of heat and pressure, for instance.
The rock cycle is an important component of our dynamic Earth because it allows rocks to shift from one type of rock to another based on their location and circumstances. It recycles rocks to build new structures when plate tectonics changes the Earth's surface.
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A mutation is least likely to affect a cell when the mutation --
Answers
A mutation is least likely to affect a cell when the mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
What is the function of cells and mutation?As genetic materials, nucleic acids encode information about the cell's structure and function, its proteins, receptors, and so on. The mRNA that is formed from the gene has roles in the formation of the receptor, the enzymes, etc., so if any mutation happens to the gene that is in the coding region, then it can show its impact, but if the mutation is of the silent type, then it has no impact on the cell.
Hence, when a mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
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HELP ASAP!!!!! I’m bein timed :(
Acid deposition kills things ___.
A. very slowly
B. within minutes
C. within hours
D. at an average rate
Answers
PLS SOMEBODY HELP!!!!
Then they want us to name 4 mRNA bases for the codon
Answers
Answer:
It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C).
Explanation:
I hope this helps :)
7. In which direction does water move through a plant?
A. Upward from the roots
B. Sideways through the leaves
C. Downward from the leaves
Answers
Answer:
A. Upward from the Roots
Answer:
The water Moves through a plant UPWARD FROM THE ROOTS.
Explanation:
When we water the plant, we water from the root and the water goes up in the plant and that's how the every part of the plant is fully watered.
2 ways to change the rate of a chemical reaction
Answers
Answer:
Increase the concentration of a reactant.
Increase the temperature of the reactants.
Which methods reduce friction? O increasing speed O lubricating surfaces O using sticky materials O increasing surface roughness
Answers
Answer:b)lubricating surfaces
Explanation:took it on edge hope this helped
Which process occurs in all living organisms at all times?
O cellular respiration
aerobic respiration
anaerobic respiration
O photosynthesis
Answers
Answer:
It is:
A. Cellular RespirationExplanation:
took the test
Need answer quick please thanks
Answers
Answer:
Aa would be ur answer:)))
how is mitosis important for sexual reproduction?
Answers
Yeast that is commonly used in bakery and beverage industries belongs to which group of microorganism?
Answers
Answer:
Fungi
Explanation:
Yeast is a microorganism that has found great use in industries as it is used in the bakery and beverage industries. This use of yeast can be attributed to its ability to undergo alcoholic fermentation process in absence of oxygen.
Yeast as a living or biological eukaryotic organism that belongs to a kingdom called FUNGI. Yeast causes dough to rise in bakery due to the synthesis of CO2 via fermentation.
2. Which of the following describes a negative feedback system?
running cattle increase panic within a herd
microphone speaker feedback
feedback that magnifies output
feedback that regulates and stabilizes
Answers
Answer:
Feedback that regulates and stabilizes
Explanation:
Negative feedback systems are ones that try to always maintain homeostasis, or a certain state.
For example, the regulation of body temperature in humans is a negative feedback loop. This is because the body maintains a constant temperature at homeostasis, and will adjust if it is too hot or cold.
Feedback that regulates and stabilizes is a negative feedback system, because it involves regulation/stabilization, similar to the regulation of body temperature.
So, the correct answer is Feedback that regulates and stabilizes
Answer:
feedback that regulates and stabilizes
Explanation:
just took test
Blood Types;
A man with type O marries a woman with type AB.
Several children were born.
1. What is the genotype of the man?
2. What is the genotype of the woman?
3. True or false? the mother of the man had type AB blood.
4. Could the mother of the woman have type O blood?
5. what fraction of offspring would have type B blood?
6. what fraction of the children would have type AB blood?
7.Could this couple have a child with type O blood?
Please answer all parts of the question!
Answers
2.AB
3. False only ii can have i baby or two recessive genes like Ai and Bi
4. No you have to have to have A and B present to have a AB baby.
5.50%
6.0% they would either be Ai or Bi
7. No O blood is recessive.
Question 7
0.5 pts
When does DNA replication occur
before the cell divides
O during cell division
O after the cell divides
O before protein synthesis
Answers
Answer:
I think your answer will be out of the cell divide
Drag each item to indicate whether it supports ocean acidification or ocean warming. (2 points)
Ocean Acidification Evidence
Ocean Warming Evidence
:: expansion of ocean volume
:: difficult for some species to make shells
:: larger concentration carbonic acid
:: melting of glaciers and ice caps
growing difficulty in absorbing carbon dioxide
:: organisms more prone to illness
Answers
Answer:Ocean Acidification Evidence: Difficult for some species to make shells , larger concentration, organisms prone to illness . Ocean warming evidence: Melting of glaciers, expansion of ocean volume, growing difficulty in absorbing
Explanation:
Ocean Acidification Evidence includes difficult for some species to make shells , larger concentration, organisms prone to illness. Ocean warming evidence encompasses melting of glaciers, expansion of ocean volume, growing difficulty in absorbing.
What is ocean acidification?The massive amount of carbon dioxide absorbed by the ocean dissolves as carbonic acid in seawater.
This is known as ocean acidification, and it is literally causing a sea change that is threatening the basic chemical balance of ocean and coastal waters from pole to pole.
As greenhouse gases trap more solar energy, the oceans absorb more heat, resulting in higher sea surface temperatures and rising sea level.
Ocean acidification is the decrease in pH of ocean water caused by CO2 dissolution in water.
Ocean warming, on the other hand, is the long-term gradual increase in the average temperature of the Earth's atmosphere. Ocean acidification and global warming are both negative consequences of human activity.
Acidification of the Oceans Evidence: It is difficult for some species to make shells, there is a higher concentration, and organisms are prone to illness.
Melting glaciers, increased ocean volume, and increasing difficulty absorbing are all signs of ocean warming.
Thus, this is the match for the given scenario.
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PLEASE HELPP
diversity in a habitat represents
A. a group of the same species
B. a group of different species
C. a unicellular organism
Answers
Answer:
B. a group of different species
Explanation:
Diversity means to have variety. (In this case, a variety of species)
HELPPPPP Some factories that burn coal produce smoke with harmful chemicals, such as sulfur. Scrubbers are devices that are attached to the smokestacks to reduce the amount of sulfur put into the atmosphere. To evaluate the effectiveness of these devices, what data would need to be collected?
A. The percentage of sulfur contained, on average, in a certain amount of coal
B. The amount of coal a factory burns each year, and how much sulfur it emits
C. The increase, over time, in the use of scrubbers by factories that burn coal
D. The amount of sulfur emitted by a smokestack before and after the scrubber is attached
Answers
Answer:
D. The amount of sulfur emitted by a smokestack before and after the scrubber is attached
To evaluate the effectiveness of these devices, the data would need to be collected is the amount of sulfur emitted by a smokestack before and after the scrubber is attached. The correct option is D.
What are scrubbers?Scrubbers are devices for reducing air pollution that employ liquid to filter out gases or particles from an industrial exhaust or flue gas stream. To effectively remove particles and polluting gases from the gas flow, this atomized liquid (usually water) entrains them.
Wet scrubbers are tools that use direct contact with a liquid spray to capture suspended particles. As the many small droplets in the spray collide with and entrain the particulates, a scrubber effectively washes the contaminants out of the contaminated air stream.
Therefore, the correct option is D.The amount of sulfur emitted by a smokestack before and after the scrubber is attached.
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2 When molecules are spread evenly across the cell ________ membrane,
is reached.
a equilibrium
b. difference
C. solution
d. transportation
Answers
Answer:
The answer is A. Equilibrium
Explanation: And I know it's a Equilibrium because I got it right the the quiz hopes this helps :) mark brianlest pls
Please put in order for a food chain.
Answers
Answer: C) The benthic invertebrates would decrease in population size because they are eaten by the sea ducks and the phytoplankton would increase in population size.
Explanation:
The benthic invertebrates are eaten by sea ducks. Sea ducks are eaten by bald eagles. If the bald eagle was removed, there would be more sea ducks because they will have no more predators. Since there are more sea ducks, they will need to eat more food, like benthic invertebrates. The benthic invertebrates would have a lower population because the sea ducks eat more of them.
Why not the other answers:
A) The bivalves would not increase in population size. Without the bald eagle preying on sea ducks, there would be more sea ducks, who need to eat more food, such as eating more bivalves.
The phytoplankton would not decrease. With sea ducks eating more food, more benthic invertebrates are eaten. There would be less benthic invertebrates to eat phytoplankton.
B) Tundra swans were never eaten by bald eagles. There is no arrow connecting them.
D) Wading birds were never eaten by ospreys. There is no arrow connecting them.
Explanation:
When people answer your question with “hey the answer is in this file here’s the link” is that safe?will it give you a virus?
Answers
Answer:
It depends on the file but I recommend to just not open the file and answer a different question just to be safe.
is the fins are for breathing?
Answers
Answer: yes
Explanation:
Yes
Answer:
Overall, our results demonstrate that the pectoral fins are capable of ventilating cutaneous surfaces and dissipating Po2 boundary layers, thus supporting the role of the pectoral fins as respiratory structures in larval fishes.