The diagram shows a large pond that dried out and formed into two smaller ponds.
What type of speciation occurred in the fish?
A. allopatric
B. peripatric
C. parapatric
D. sympatric
Answer:
A. allopatric
Explanation:
Allopatric speciation consists of the geographic separation of a continuous genetic background -population-, giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate individuals, or geological events. In this type of speciation, some barriers impede genetic interchange or flow. The populations are separated by a barrier and can not get together and mate anymore. These barriers might be geographical or ecological.
When a geographical barrier emerges, this is known as a vicariant event. Vicariance is the geographical separation of a population imposed by discontinuities in the physical environment that divides populations that originally were continuous. The process of vicariant allopatric speciation involves different steps:
• The emergence of the barrier.
• Interruption in the genetic interchange
• The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
• Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
• Prezigotic isolation mechanisms favored by selection once a secondary contact between the new formating species occurs.
So in the exposed example, the original population was composed of fishes living in a pond under the same environmental conditions and selective pressures.
However, with time, the pond dried, causing a decrease in water level and the emergence of a new physical barrier. The original population got separated by a piece of ground, and the original pond turned into two smaller ponds. The physical barrier is now interrupting the genetic flow between both groups.
Animals on each pond suffer from different environmental pressures to which they need to adapt. New mutations occur, leading to genetic divergence between the two separated groups. Two species emerged, red fishes and blue fishes.
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5.)An ecosystem is made up of __________ and ___________ that live together in an environment.
Answer:
animals and plants
Explanation:
Tom grew three inches in one year. Which organ system was directly responsible for his growth spurt?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Endocrine system,
Solid waste includes all of the following except
A. agricultural waste
B. methane
C. plastics
D. food waste
Answer:
B. methane
Explaination: ...............................
How many active volcanoes in Luzon , Visayas and Mindanao?
The heart is a small muscular organ with several chambers that contract to push fluid through. The heart is connected to tube-like vessels, which reach every cell in the entire body.
The structure of the heart enables this organ to
A.
interpret images, sounds, textures, and smells taken in through the sense organs.
B.
provide the strong, rigid framework to which the muscles of the body attach.
C.
pump blood containing nutrients, wastes, and gases throughout the body.
D.
provide an opening through which wastes can pass from the body to the outside.
Answer:
C
Explanation:
That’s the main purpose of the heart
Answer:
touching and touching your re still a charged time but the best way is the best for the kids in meeting the best friends and family members of samruddhi who have not had kept up since they were born
define the word corrosion
Answer:
Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment
Explanation:
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Answer:
the process of corroding metal, stone, or other materials
corroding: destroy or damage (metal, stone, or other materials) slowly by chemical action.
The process of destroying metal, stone, or other materials.
Explanation:
Why might parasitic roots have developed in plants like the mistletoe?
Answer:
Mistletoe is a parasite – it steals water and nutrients from trees. Technically, it is a “hemiparasite”, which means that it can generate some of its own resources through photosynthesis – it just needs that energetic kick from the sun to fuel the biological siege and subsequent invasion of the tree
Explanation:
"How is it possible that siblings with the same parents can have such different traits, such as skin tone?"
Answer:
is there options?
Explanation:
Explanation
The transport of water through a plant depends on roots absorbing water. Roots depend on osmosis to obtain water. In osmosis, water always a. Moves from a high concentration to a lower concentration b. Moves from a lower concentration to a higher concentration c. Moves so that the concentration of water on one side of the cell membrane is higher than on the other side d. Moves until there is no water left on one side of the cell membrane
Which of the following pollutants is found in old paint and gasoline and can cause brain damage and learning problems?
A. particulate matter
B. lead
C. coal dust
D. pesticides
Other:
Answer:
Lead
Explanation:............
None
Two dogs pull on a rope. One dog pulls with a force of 5 N to the left, and the other dog pulls with a force of 3 N to the right. What is the result?
A.The rope remains in place.
B.The rope moves to the left.
C.The rope moves to the right.
D.The rope has a balanced force applied to it.
Answer: It's B because there is more force pulling to the left.
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6. What is causing the Earth to become imbalanced with carbon-based molecules.
Answer:
Human activities are causing imbalance of carbon based molecule.
Explanation:
It is the human intervention in the most unavoidable way that is affecting the environmental cycle and one of these cycle is the carbon cycle. Human activities such as burning of fossil fuels, excessive cutting of trees, rising green house effect, use of CFCs etc is hindering the environment process and hence causing imbalance on the earth.
Which tissue found in the centre of bones produces blood cells?
Human beings are:
2nd order consumers
1st and 2nd order consumers
producers
1st order consumers
Answer:
1st and 2nd order consumers as they are pretty much all omnivores.
Explanation:
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1. The innate tendeney of offspring to resemble their parents is called
a) varaition
b) herldity
c) Inheritance
d) resemblance
PLEASE HELP ME!!!!
IT IS FOR BIOLOGY!!!
Answer:
B.
Explanation:
If the fish population is decreasing, then there will be a loss in biodiversity, then causing a problem in the ecosystem.
Will give brainliest
Answer:
d i think
Explanation:
study the punnett square below. what percentage of the offspring are heterozygous
Answer:
50%
Explanation:
Heterozygous is when both of the alleles are different. Since AA and aa are the same allele, the other two Aa and Aa have on capital and one lowercse and for that reason they are different and thus heterozygous. Since 2.4 are heterozygous, 50% is the answer.
is this a prokaryotic or a eukaryotic cell. explain
Answer:
Please attach a picture so that Other Brainly users can try and help you with your work :)
Explanation:
what countries have the best geo thermal resources
Answer:
Indonesia Philippines Turkey New Zealand Mexico Italy Iceland and the U.S
Explanation:
If a person is normovolemic and consumes a large quantity of a hyperosmotic solution, it will ________. If a person is normovolemic and consumes a large quantity of a hyperosmotic solution, it will ________. cause cells to shrink due to a decrease in the osmolarity of extracellular fluid cause cells to swell due to a decrease in the osmolarity of extracellular fluid cause cells to swell due to an increase in the osmolarity of extracellular fluid have no effect on cell osmolarity and thereby cell size cause cells to shrink due to an increase in the osmolarity of extracellular fluid
Answer:
cause cells to shrink due to an increase in the osmolarity of extracellular fluid.
Explanation:
Normovolemic describes the situation in which a living organism maintains a normal volume or amount of blood in the body.
A hyperosmotic solution can be defined as a solution having an increased level of osmotic pressure. Thus, when there's a greater amount of solute with respect to another solution in a membrane with close similarities, it is known as hyperosmotic solution.
Basically, hyperosmotic solution gives rise to higher difference between solutes and similar solutions.
Hence, when a normovolemic person consumes a large quantity of a hyperosmotic solution, it will cause cells to shrink due to an increase in the osmolarity of extracellular fluid i.e the total number of solute particles with respect to the concentration of a solution (Osm/L).
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In two or more complete sentences compare transformation and transfection gene therapies.
Answer:
The main difference between transfection and transformation is that the transfection refers to the introduction of foreign DNA. Into mammalian cells while the transformation refers to the introduction of foreign DNA into bacterial, yeast or plant cells.
Explanation:
Hope this helps have a nice day!
Which change occurs in a fetus during the first trimester?
A. Rapid weight gain occurs.
B. Fingers and toes become well defined.
C. Eyes and ears become fully developed.
D. Central nervous system completes development.
Answer:
D. Central nervous system completes development
Explanation:
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.
Which of these mutations most likely results in the mutated hemoglobin gene?
F. Insertion
G. Deletion
H. Duplication
J. Substitution
Answer:J
Explanation:Substitution
Mutation in genes can result in different types of abnormalities. In gene related to hemoglobin makes RBCs sticky, irregular shaped, this is because of substitution.
What is substitution?Mutation is a type of replication error during formation of new DNA.
In substitution mutation, incorrect nucleotide is placed at incorrect position during DNA replication, a point mutation occur in which a single nucleotide is substituted.
It actually does not add or remove any nucleotide from the sequence, just it substitute it.
In gene related to hemoglobin, the amino acid glutamic acid gets replaced with the valine amino acid at position 6 in beta-globin, which results in sticky, irregularly shaped red blood cells.
Thus the correct option is J.
For more details regarding substitution mutation, visit:
https://brainly.com/question/15204431
Help im stuck on this question
can someone write 6 interesting facts about renewable energy resources
Answer:
Renewable Energy Produces 5 Times More Jobs Than Fossil Fuels.... China Produces Two Wind Turbines Per Hour.
A single wind turbine will power tens of thousands of homes.
Portugal Powered Their Whole Country Using Only Renewable Energy.... Tech Corporations Are Competing To Be Green Energy Leaders.
Explanation:
Select the correct answer.
Matt is a student preparing for a test on veterinary science. He wants to know what type of noninfectious disease describes all kinds of
cancerous growths. Which type of disorder includes cancerous growths?
A metabolic
B. neoplastic
C. degenerative
D. genetic
Answer:
b i think i am sorry if am wrong
Explanation:
PLZ HELP ME
Describe what they are and how it works.
Tidal power
Ocean thermal energy conservation
Hydrogen fuel
Fuel cell
Energy Efficiency: give an example
Hybrids: give an example
Cogeneration
Energy conservation: give an example
Answer:
tidal power
Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods. Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun.
Ocean thermal energy conservation
Ocean Thermal Energy Conversion (OTEC) is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans to generate electric power. ... OTEC uses the ocean's warm surface water with a temperature of around 25°C (77°F) to vaporize a working fluid, which has a low-boiling point, such as ammonia.
hydrogen fuel
Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat. Many different types of fuel cells are available for a wide range of applications
fuel cell
Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte.
Energy Efficiency
Energy efficiency simply means using less energy to perform the same task – that is, eliminating energy waste. Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.
Hybrids
a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.
Bovid Hybrids. Zubron - hybrid of domestic cattle and european bison
cogeneration
Cogeneration—also known as combined heat and power, distributed generation, or recycled energy—is the simultaneous production of two or more forms of energy from a single fuel source. Cogeneration power plants often operate at 50 to 70 percent higher efficiency rates than single-generation facilities
Explanation:
1. 1. What happens during cell differentiation?
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.