Answer: Divergent evolution or divergent selection is the accumulation of differences between closely related populations within a species, leading to speciation.
Explanation: Greetings:)
NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!
1. Cell starts into mitosis phase of the cell cycle.
2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)
3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)
4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)
5. Two new molecules of DNA are created
Statements:
Adenine
Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)
DNA
Replication
Double helix
Which example best demonstrates artificial selection?
Salmon swimming upriver to lay their eggs.
The forrest service stocking trout in a lake in Montana.
Farmers breeding pigs with less fat.
While taking a nature walk with their class, students observe many mushrooms growing among the fallen leaves on the forest floor.
– What is the role of mushrooms in the forest ecosystem?
– What other type of organism performs a similar role in the forest ecosystem?
This is for a writing thing can u guys write about it I really need help thank u
Answer:
The mushrooms act as decomposers, there are many other species that also does this such as worms
Can you guys help me?
Answer:
first one is active transport sorry cant help with the rest
Explanation:
What happens to food and air when they enter the body?
When is the carbon stored in plants released?
a. during cellular respiration
b. during photosynthesis
C. when they die
d. none of the above
Answer:
Helloooo
C. When they die
Explanation:
thanks ☺️
are are the two processors that obtain energy
what is the powerhouse of the cell
Answer: mitochondria
Explanation: ur welcome
Determine if each factor is biotic or abiotic
Answer:
Grasshopper: Biotic
Pond water: Abiotic
Dead tree: Abiotic
Soil: Has both but it is better to say Abiotic
Fungus: Biotic
Temperature: Abiotic
Answer:
Biotic Factors: grasshopper, dead tree, fungus
Abiotic Factors: Pond water, soil, temperature
Please HELP!!WILL GIVE BRAAIN!!!
Answer:
False
Explanation:
Pluripotent stem cells are master cells. They're able to make cells from all three basic body layers, so they can potentially produce any cell or tissue the body needs to repair itself.
Pluripotent stem cells have the ability to undergo self-renewal and to give rise to all cells of the tissues of the body (but not the placenta).
Which of the four factors that affect evolution apply to the finches that the Grants studied? Use
evidence from your research to support your answer. (15 points)
Answer:
Natural Selection in Real Time
"When we made the comparison between the size of the offspring generation and the population before selection, we found a measured, evolutionary response had taken place and it was almost identical to what we had predicted."
-Peter Grant
Darwin thought that evolution took place over hundreds or thousands of years and was impossible to witness in a human lifetime. Peter and Rosemary Grant have seen evolution happen over the course of just two years.
The Grants study the evolution of Darwin's finches on the Galapagos Islands. The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all descendants of a common ancestor. Each species eats a different type of food and has unique characteristics developed through evolution. For example, the cactus finch has a long beak that reaches into blossoms, the ground finch has a short beak adapted for eating seeds buried under the soil, and the tree finch has a parrot-shaped beak suited for stripping bark to find insects.
The Grants have focused their research on the medium ground finch, Geospiza fortis, on the small island of Daphne Major. Daphne Major serves as an ideal site for research because the finches have few predators or competitors. (The only other finch on the island is the cactus finch.) The major factor influencing survival of the medium ground finch is the weather, and thus the availability of food. The medium ground finch has a stubby beak and eats mostly seeds. Medium ground finches are variable in size and shape, which makes them a good subject for a study of evolution.
The first event that the Grants saw affect the food supply was a drought that occurred in 1977. For 551 days the islands received no rain. Plants withered and finches grew hungry. The tiny seeds the medium ground finches were accustomed to eating grew scarce. Medium ground finches with larger beaks could take advantage of alternate food sources because they could crack open larger seeds. The smaller-beaked birds couldn't do this, so they died of starvation.
In 1978 the Grants returned to Daphne Major to document the effect of the drought on the next generation of medium ground finches. They measured the offspring and compared their beak size to that of the previous (pre-drought) generations. They found the offsprings' beaks to be 3 to 4% larger than their grandparents'. The Grants had documented natural selection in action.
While beak size is clearly related to feeding strategies, it is also related to reproduction. Female finches tend to mate with males that have the same size beaks. These factors together can add to the development of new species.
The Grants return each year to Daphne Major to observe and measure finches. They have been collecting data on the finches for over 25 years and have witnessed natural selection operating in different ways under different circumstances.
What would need to happen for the sand on the beach to turn into a rock? Explain the necessary steps.
Answer:
Bacillus pasteuri, naturally occurring bacteria, can be used to turn sand into sandstone (calcite cement). This relatively simple process creates durable, low cost building materials. The technical name for this is microbial-induced calcite precipitation (MICP).
What is the relationship between the growth of bread mould and temperature?
Answer: bread molds need moisture so that the mold doesn't dry out if it is exposed to light or heat.
Explanation: Optimal mold growth occurs in warm temperatures, since the proteins that control chemical processes work more efficiently when it is warm rather than when it is cold.
Importance of plants from an economic, nutritional, environmental and medicinal point of view
Please be correct answer, and if you do not know not with this!
Answer:
Plants are extremely important in the lives of people throughout the world. People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization .
Plants provide food directly, of course, and also feed livestock that is then consumed itself. In addition, plants provide the raw materials for many types of pharmaceuticals, as well as tobacco, coffee, alcohol, and other drugs. The fiber industry depends heavily on the products of cotton, and the lumber products industry relies on wood from a wide variety of trees (wood fuel is used primarily in rural areas). Approximately 2.5 billion people in the world still rely on subsistence farming to satisfy their basic needs, while the rest are tied into increasingly complex production and distribution systems to provide food, fiber, fuel, and other plant-derived commodities .
Medicinal plants have been used in healthcare since time immemorial. Studies have been carried out globally to verify their efficacy and some of the findings have led to the production of plant-based medicines. The global market value of medicinal plant products exceeds $100 billion per annum. This paper discusses the role, contributions and usefulness of medicinal plants in tackling the diseases of public health importance, with particular emphasis on the current strategic approaches to disease prevention. A comparison is drawn between the ‘whole population’ and ‘high-risk’ strategies. The usefulness of the common-factor approach as a method of engaging other health promoters in propagating the ideals of medicinal plants is highlighted.
How many amino acids are coded for by the strand of mRNA shown below? Assume the reading frame begins with the first nucleotide.
CGA UAC
Answer:
2 ..........................
Answer:
2
Explanation:
Two for the win!
How do Venus flytraps protect themselves from predators?
Answer:
Insects are protected by a chitin exoskeleton. The Venus flytrap cracks this protective shell using special digestion enzymes that are produced once the sensory hairs register a stimulus. It will ebb away if the hairs are not further stimulated.
Answer:
I do believe that the Venus flytrap is a predator because it is a carnivorous plant. The plant's trap is a single large leaf with trigger hairs.
Explanation:
A pea plant with purple flowers is crossed with a pea plant that has white flowers. All the offspring are purple, so we can conclude that
Answer:
That the purple trait is dominant and the purple pea plant has a gene type of PP and the white flower has a gene type of pp
what happens when psychological processes break down?
Answer:
dont question the impossible
Explanation:
In a solution, salt is considered the
solute
solvent
Answer:
Solvent
Explanation:
Epistasis, such as albinism, is a result of ______. polygenic inheritance. multiple alleles. incomplete dominance. . codominance.
The more classification levels that two organisms share,
A) Group of answer choices
B) The easier it is to tell them apart
C) The more directly related they are
D) They closer together on Earth they live
The more twins they are
Answer:A or the more twins they are
Explanation:
All of the following are functions of proteins except?
A) storage
B) movement
C) structure
D) insulation
All of the following are functions of proteins except insulation. So, the correct option is (D).
What is Protein?Proteins are defined as large biomolecules and macromolecules consisting of one or more long chains of amino acid residues. Proteins do most of the work in cells and are essential for the structure, function, and regulation of the body's tissues and organs.
Proteins serve as the building blocks for bones, muscles, cartilage, skin and blood which also form the blocks for enzymes, hormones and vitamins. Proteins are one of the three nutrients that provide calories while the others are fats and carbohydrates.
Proteins function are storage, movement, structure, etc.
Thus, all of the following are functions of proteins except insulation. So, the correct option is (D).
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What makes two isotopes of the same element different from each other?
A. the electric charge of the atom
B. the number of electrons in the atom
c. the number of protons in the atomized nucleus
D. the number of neutrons in the atomic nucleus
Answer:
An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Explanation:
pretty sure its D
Please help. This model shows a strand of DNA. Identify how information for specifying the traits of an organism is carried in the DNA.
A)
DNA codes for the sequence of nucleotides in RNA.
B)
The nitrogen bases in DNA code for the sequence of amino acids that make
up a protein
C)
The nitrogen bases in DNA code for the sequence of nucleic acids that
make up a protein.
D)
The sugar molecules found in the backbone of a DNA molecule code for
the RNA nucleotides.
Answer:B
Explanation: I just did it
Answer:
the answer is B)
Explanation:
DNA is made of nucleotide nitrogen bases, witch turn into Amino Acids, and then finally into protein
can anyone answere this question please
Answer:
Missense
Explanation:
A missense mutation is a mistake in the DNA which results in the wrong amino acid.
PLSS I WILL GIVE YOU BRAINLYEST!!
Give a written example of a habitat starting at
primary succession and ending up in a climax
community.
Explanation:
WRITTEN BY
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Alternative Title: primary plant succession
Primary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat. Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive. Primary succession is distinguished from secondary succession, which is the recovery of an existing biological community after a disturbance sets back the community’s ecological structure to an earlier stage.
Primary succession
Primary succession
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil. The final stage of succession is a climax community, which is a very stable stage that can endure for hundreds of years.
Encyclopædia Britannica, Inc.
Primary succession
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Ecological succession
Pioneer species
Lava-sterilized landscapes, newly formed sand dunes, and rocks either deposited or scoured by retreating glaciers are examples of settings in which primary succession often occurs, because these places either lack soil or their soil cannot sustain life. On newly created volcanic islands, for example, after the rock cools, seeds blown by the wind may lodge in crevices, germinate, and take root. Often these first colonizing plants are weedy species, such as fast-growing grasses and lichens, that do not grow tall but do reproduce quickly. After these plants germinate and grow, they die and decompose, and their remains create pockets of soil in which other plants, as well as fungi, can become established. Over time, such fast-growing vegetation covers more and more of the island, and seeds from other, hardier, taller-growing plants arrive on the wind or are transported by birds that begin to use the island as a stopover during migration.
Surtsey
Surtsey
Surtsey, a volcanic island off the southern coast of Iceland, emerged from the Atlantic Ocean in a fiery eruption in November 1963. Shortly thereafter plants such as sea rocket (Cakile arctica), sand ryegrass (Leymus arenarius), oysterleaf (Mertensia maritima), and seaside sandplant (Honckenya peploides) colonized the island. Much of Surtsey's vegetation is composed of lichens and mosses. However, some higher plants such as the dwarf willow (Salix herbacea) and tea-leaved willow (S. phylicifolia) have grown on the island since the 1990s.
ARCTIC IMAGES/Alamy
These new arrivals shade out sun-loving grasses, shrubs, and other pioneer species, and their cast-off parts decay and add to the soil, altering it by mixing with soil particles left by the decay of earlier plants. More plants and animals arrive (the latter rafting over on flotsam or flying from nearby islands or the mainland), and some become established on the island. The ecosystem changes with each new arrival. Over several decades, the biological community transitions from collections of pioneer and intermediate species to a climax community—that is, a relatively balanced ecological stage whose ecological structure and species composition are far less volatile than those of earlier stages.
The Editors of Encyclopaedia Britannica
This article was most recently revised and updated by John P. Rafferty, Editor.
LEARN MORE in these related Britannica articles:
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Select the terms that are evaluated before assigning a Koppen-Geiger Scale rating.
•exposure
•latitude and longitude
•humidity and precipitation
•commercial crops
•local native plant life
•soil content
•elevation above sea level
•temperature extremes
Terms included in the Koppen-Geiger scale classification are: humidity and precipitation, and local native plant life.
What is the Koppen and Geiger climate classification?The Koppen climate classification is a classification created in 1884 in which the different types of climate are described and associated with a series of letters, usually three, that indicate the behavior of temperatures and precipitation.
Additionally, this system is based on the natural vegetation of different parts of the world because this factor is related to climate, especially the limits between one climate and another.
According to the above, it can be inferred that the correct terms are: humidity and precipitation, and local native plant life.
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19. During which phase of the cell cycle does the chromosome number increase to 4n?
A)Gap 2
B)synthesis
C)Interphase
D)mitosis
Answer:
I believe it's gap 2
Explanation:
i hope this helps if not im sorry
Color-blindness results from both the expression of a single recessive sex-linked allele (b.)
Which of the following is a genotype of a colorblind male?
XbY
XBXB
XBY
XbXb
Answer:
XbY
Explanation:
because the question asks genotype of a male, the chromosomes would be XY, so XBX and XbXb can be eliminated leaving only XBY and XbY. XBY is incorrect because the question states that colorblindness is represented by lowercase b, so the correct answer is XbY.
21. The graphs show the results from an investigation of relative enzymatic activity of four different enzymes in acidic and basic environments.
Which enzyme would most likely function well in the stomach?
Pepsin
Papain
Chymotrypsin
Cholinesterase