Answer:
I think it's b - random mutations... >3
A change in allele frequency is directed by natural selection. So the correct answer is option A.
What is meant by allele frequency?The allele frequency (also known as gene frequency) refers to the frequency at which a particular allele appears in a population. The term evolution in population genetics refers to a variation in the frequency of a particular allele within a population. The frequency ranges from 0 (zero alleles present in no individuals) to 1 (all alleles present in all individuals). The gene pool refers to the sum of all alleles at all the genes in a population.
Natural selection affects the phenotype, or observable characteristics, of an organism. Phenotype is usually largely determined by genotype (the number of alleles, or versions of genes, that an organism carries).
When the phenotype produced by specific alleles helps an organism survive and multiply better than its neighbors, natural selection can spread the beneficial alleles from generation to generation – in other words, it causes microevolution.
To learn more about natural selection refer to the link: https://brainly.com/question/9830102
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how can you separate iron filings from sand through which process
Answer:
Process called magnetic separation
Explanation:
The magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using magnetic force.
This method is also used to separate the mixture of sand and iron fillings as iron is attracted by magnet.
Answer:
Use a magnet to separate the iron filings from sand since iron is magnetic
What is the main function of the endocrine system?
A. secrete hormones
B. send nerve impulses
C. produce blood cells
D. produce DNA
Answer:
A. secrete hormones
Explanation:
Endocrine glands release hormones into the flowing bloodstream, which lets them travel to cells in other body parts. These endocrine hormones help control mood, growth & development, the way our organs work, metabolism, and reproduction.
Answer:
A secrete hormones
Explanation:
Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism , and reproduction.
hope it helps
The light reactions can only occur in the absence of light.
A. True
B. False
Answer:
false
Explanation:
the light reactant needs light
*WILL GIVE BRAINLIEST+100 POINTS* i need a Model describing the carbon cycle
A major difference between eukaryotes and prokaryotes is that __________. A major difference between eukaryotes and prokaryotes is that __________. some eukaryotic cells live in areas of temperature extremes whereas prokaryotic cells cannot prokaryotic cell structure is much more complex than eukaryotic cell structure eukaryotes were the first cell type on Earth eukaryotic cells contain the genetic material DNA whereas prokaryotic cells contain RNA eukaryotes' survival is limited to a few environments whereas prokaryotes have adapted to a variety of environments
Answer:
All life on Earth consists of either eukaryotic cells or prokaryotic cells. Prokaryotes were the first form of life. Scientists believe that eukaryotes evolved from prokaryotes around 2.7 billion years ago.
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information. In prokaryotes, DNA is bundled together in the nucleoid region, but it is not stored within a membrane-bound nucleus.
The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles. Another important difference is the DNA structure. Eukaryote DNA consists of multiple molecules of double-stranded linear DNA, while that of prokaryotes is double-stranded and circular.
Explanation:
A population of beach mice have been
introduced to a new disease. This
disease has killed off most of the
population. Some mice in the
population were better suited and
survived the disease, living to
reproduce. The population over time
has grown resistant to the disease.
This is an example of?
(1 Point)
*
Artificial Selection
Natural Selection
Selective Breeding
Individual bones are organs.
A. True
B. False
Answer:
a
Explanation:
Answer:
True
Explanation:
Because they are made out of tissues
Which number is labeling the part of the digestive system that releases acid and mixes the food to break it down?
Answer:
D
Explanation:
the stomach releases strong acid to digest and break down the food
How do electronegativity, polarity, and ph all relate and effect each other? I know moderators, you will be reported if you give a link or wasteful answer.
Answer:Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.
Explanation:
name the structure of the brain that controls sleep.
A. hypothesis(pituitary gland)
B. hypothalamus
The answer's B. hypothalamus
mark me brainliesttt :)))
Escribe las diferencias entre los dos tipos de sinapsis.
Why do scientists only test one independent variable in an experiment?
Me pueden ayudar con la respuesta? Es urgente!
A: especie
B: gen
C: desarollo
D:
E:deriva genetica
F:población
G:mutuación
no ps no pude con la D-
How is the atmosphere a system, include components, inputs, outputs & flow.
Answer:
the flow in systems besides the flow.
Explanation:
Answer:
When studying Earth as a whole, our primary input is energy from the sun and from space. Earth outputs heat and light to space, maintaining an approximate overall steady-state with respect to energy.
Explanation:
Pls help me will give points
Answer:
D
Explanation:
D is my best bet because most have cilia and flagella to help move them around their environment.
A is for multicellular organisms, B occurs only in some unicellular but not all, C is for multicellular mostly (some unicellular can have it), but D applies to majority of unicellular (almost all have some sort of mechanism for movement)
Loni makes a diagram to help organize what she has learned about the gas laws.
Which label belongs in the region marked X?
involves changes in temperature
has a constant volume
shows an inversely proportional relationship
does not describe pressure changes
Answer:
Shows an inversely proportional relationship.
Explanation:
The Boyle's law belongs in the region marked X whereas the other circle belongs to Charles law. There is inverse relationship between the two circles or these two laws because in Boyle's law, temperature is constant while on the other hand, in Charles law pressure is constant instead of temperature. In Boyle's law, pressure of a gas is inversely with its volume whereas in Charles law, the volume of a gas is directly proportional to its absolute (Kelvin) temperature.
Question 4 of 10
What is the main function of the circulatory system?
O A. To break down food into molecules of nutrients
B. To collect wastes made by cells and remove them from the body
O c. To carry nutrients to cells and wastes away from cells
O D. To protect the body from pathogens that can cause infection
SUBMIT
Jumble letter can you help me plsss
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In short it's natural resources.
All of living and noliving things in a particular area
What is the correct order of organization from SMALLEST to LARGEST?
A. Cell-organ-organ system- tissue
B. Organ system-organ-tissue-cell
C. Cell-tissue-organ-organ system
Answer:
Option C.
Explanation:
The next largest unit is tissue; then organs, then the organ system. In order, from least complex to most complex: cells; tissues; organs; organ systems; organism; Tissues.
Answer:
C. Cell-tissue-organ-organ system
Explanation:
The cell→ tissue→ organ→ organ system is the correct order of organization from smallest to largest.
helpppppppppppppppp plzzzzzzzzz
Answer:
C would be the answer to your answer
Hope this helps :)
Explanation:
helpppppppppppppppp plzzzzzzzzz
Heh- no worries i gotchu XDHomologous: Similar in position, structure, and evolutionary origin but not necessarily in function.
With this being said the answer is: "B" A bird's wing bone!, it's similar to a human's arm bone but it doesn't do the same thing as a human's arm bone! I apologize if i'm wrong//You're welcome if i'm correct((-Side Note-)): If you don't mind if my answer is correct can you pls mark my answer brainliest? Thank you ^v^
I hope you have a great day ^v^"Which of the following is a form of stored energy?
Answer:
What are the options?
Explanation:
Answer:
Options,Options,Options...
helppppppppp plzzzzzzzzzzz
what is the total amount of Vit B in 100g Milo powder
Answer:
3.6 µg of Vitamin B12, 2.3mg of Vitamin B6, 30.1mg of Niacin B3, 1.8mg of Vitamin B2
Explanation:
Total amount of Vitamin B in 100 grams of Milo powder contains 3.6 µg of Vitamin B12, 2.3mg of Vitamin B6, 30.1mg of Niacin B3, 1.8mg of Vitamin B2. In milo powder, almost all types of vitamin B are present which make it good for our health. This milo powder also contains 54mg Vitamin C, 594mg of Calcium and 21.8mg of Iron so the total amount of Vitamin B is more about 34.2 mg.
- shape and size of cells are related to the function
they perform . Explain with example
Answer:
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shapeA functional or physiological adaptation:
A. Is a physical feature of an organism that helps it survive
B. Allows an organism to perform special functions within the body
C. Is a behavior that is taught after birth
Answer:
A trust me.
Explanation:
are you functional adaption is an adaption that helps an organism survive in a certain environment, typically altered by a physical stimuli, dietary changes, or injury.
Answer:
yes behavior is taught after birth
- The ability of an ecosystem to maintain a steady equilibrium by responding to
internal and external negative feedback systems describes -
Answer:
Describes ecosystem homeostasis
Explanation:
Select the correct answer.
Consider the following chemical equation:
NH3 + O2 → NO + H2O
The equation is unbalanced. Which of the following is the correct balanced equation?
A.
NH3 + 2O2 → NO + 6H2O
B.
4NH3 + 5O2 → 4NO + H2O
C.
4NH3 + 5O2 → 4NO + 6H2O
D.
NH3 + 5O2 → NO + 6H2O
Reset Next
Answer:
the answer is b.4NH3+5O2=4NO+H2O
Any reaction that is not intended is called
Item 5 What is the role of a generator in producing electricity? The generator stores electrical energy for later use in homes and businesses. The generator spins the turbine to create mechanical energy. The generator transforms the mechanical energy of the turbine into electrical energy. The generator reverses the turbine to create electrical energy.
Answer:
The generator transforms the mechanical energy of the turbine into electrical energy
Explanation:
Electricity generator is a device that is used in generating power supply which can be used in industries, homes and for commercial and private purposes.
It operates by converting mechanical energy into electrical energy for the use in an external circuit. mechanical energy can be obtained from steam turbines, internal combusting energy, gas and water turbines and it can be obtained through the rotating shaft.
The capacity of each generator determines the amount of energy it can supply to a given place.
