Answer:
d
Explanation:
because mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Mitosis does not create variation within a population.
What 4 processes create variation within a population?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis .
What is variation in population?Variation among populations refers to the level of differences between two or more populations.
Hence, A is correct option
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The first correct answer gets brainliest please help!
In December, a city in the Southern Hemisphere has warm weather all month long. What causes this to happen?
The city experiences fewer hours of daylight.
The city is experiencing a winter solstice.
There is a high concentration of the Sun’s rays in that region.
The Sun reaches its highest point in the sky during this month.
Answer: There is a high concentration of the Sun’s rays in that region.
Answer:
There is a high concentration of the Sun’s rays in that region.
Explanation:
Fred is studying his notes from anatomy class. One list in his notes describes features of a CNS structure.
anterior horns and posterior horns
gray matter inside, white matter outside
hippocampus
central canal
Fred thinks this list contains an error. Which best describes the error?
A) Most items are features in the brain, but the gray and white matter locations correspond to the spinal cord.
B)Most items are features in the brain, but the horns are in the spinal cord.
C)Most items are features in the spinal cord, but the central canal is in the brain.
D)Most items are features in the spinal cord, but the hippocampus is in the brain.
Answer: D!!!!!
Explanation: JUST DID IT!!!
The list that contains an error is most items are features in the spinal cord, but the hippocampus is in the brain. The correct option is D).
What is CNS?
CNS means the central nervous system that contains the parts, brain, and spinal cord of animals. Its job is to control voluntary and involuntary movements of the body.
The hippocampus is a complex structure of the brain present in the temporal lobe, not the spinal cord.
Thus, the correct option is D) Most items are features in the spinal cord, but the hippocampus is in the brain.
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1. What are three examples of diseases caused by bacteria?
Answer:
meningitis, pneumonia, and cholera
cross a heterozygous individual with a homozygous recessive one determine the genotype ratio and phenotype ratio of their offspring
Answer:
Let's have our alleles be J = dominant, j = recessive. And for fun let's make the dominant phenotype black coat, the recessive brown coat.
Heterozygous x homozygous recessive
= Jj x jj
Punnett square:
J j
j Jj jj
j Jj jj
Genotypic ratio: 2 Jj : 2 jj, or a one-to-one ratio of Jj to jj.
Phenotypic ratio: 2 black : 2 brown, or a one-to-one ratio of black to brown.
I need the answer ASAP :(
Answer: A.
Explanation: If you take tree 1 for more fruit and mix it with tree 3 for disease and drought resistance then you'll have the perfect crop!
what are malpighian tubules
Answer:
a tubular excretory organ, numbers of which open into the gut in insects and some other arthropods.
(oxford languages supplied the definition)
Can the number of protons in an element ever change?
Answer:
An elements atomic number will never change
Explanation:
That is because the atomic number is its "identity.". The atomic number is the number of protons that is contained in the nucleus, if you add a proton you change the element. Therefore, an elements atomic number will never change. Atomic mass, however, can change and we call these isotopes.
Answer:
An elements atomic number will never change, that is because the atomic number is its "identity." The atomic number is the number of protons that is contained in the nucleus, if you add a proton you change the element. Therefore, an elements atomic number will never change.
Explanation:
I WILL MARK BRAINLIST
Fill in the blanks with the correct words.
The movement of molecules from an area of low concentration to an area of high concentration occurs in
transport.
In
transport, molecules move from an area of high concentration to an area of low concentration.
Answer:
The movement of molecules from an area of low concentration to an area of high concentration occurs in active transport.
In passive transport, molecules move from an area of high concentration to an area of low concentration.
Explanation:
Coral reefs protect beaches and shorelines from damage caused by__?
A.pollution
B.waves
C.humans
D.other organisms
Answer:
Waves
Explanation:
Answer:
It's Waves and storms but since its not multi choice and there's no choice for storm I would say that its waves.
Explanation:
Two mammals with the genotype CcEr are crossed. 'C' produces a thick coat of fur and is dominant to 'c', which produces a thin fur coat. 'E' produces brown eyes and is dominant to 'e', which produces red eyes. What fraction of offspring would you except to have both a thin fur coat and brown eyes?
Answer:
3/16 of the kids would be expected to have a thin fur coat and brown eyes.
Explanation:
Use the punnet square method.
The fraction of offspring would you except to have both a thin fur coat and brown eyes is 3/16.
What is Punnett Square?A Punnett square is defined as a helpful tool to help predict variations and probabilities which may come from cross breeding in which plants, animals, even humans interbreed with each other. This is used by biologists for determining the probability of an offspring having a particular genotype.
The information given above is dizygotic cross which is a cross between two individuals having two observed traits which are controlled by two different genes. In this case, the two traits are thick and thin fur coats (C and c, respectively) and brown and red eyes (E and e, respectively).
The expected phenotypic ratio of crossing heterozygous would be 9:3:3:1 which produces
9 Thick fur coat and Brown eyes mammals (9/16 fraction)
3 Thick fur coat and Red eyes mammals (3/16 fraction)
3 Thin fur coat and brown eyes mammals (3/16 fraction)
1 Thin fur coat and red eyes mammals (1/16 fraction)
Thus, the fraction of offspring would you except to have both a thin fur coat and brown eyes is 3/16.
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What happened when the Argentine ants and the red imported fire ants went to war with each other in the United States?
Answer:
They both were fighiting
Explanation:
Giraffes, camels, and horses share some traits, although they vary in other traits. Which statement accurately describes the evolution of these species?
Answer:
If there are options for this question, I couldn't find them online but I can tell you that one statement that describes the evolution of these species is that each of them shared an ancient ancestor.
Explanation:
The ancient common ancestor that these species share is that animal, in this case, from which all species descend.
It is the only species of living being that has evolved over the years and its original traits have varied, which led to the creation of all these species. That is why some of those traits will still be shared by them, while others, due to evolution, will not.
That is why we could say that these animals belong "to the same family" since they all come from the same ancestor.
Genes often contain large regions that are NOT included in translation. These sections are called
Answer:
Non-coding regions
Explanation:
Genes are segments of DNA that undergoes expression into functional products called PROTEIN. However, these genes contain both the parts or regions that encode proteins and those that don't. The part that encodes proteins are called coding sequences while those that don't encode proteins, which make up the bulk of the gene are called Non-coding regions.
When a gene undergoes expression, it is first transcibed into an RNA molecule, then translated into proteins. The coding regions of the gene will be translated while the non-coding regions will be spliced out
(introns) post-transcriptionn or be used to make RNA.
What is the normal respiration rate for horses, in breaths per minute?
Answer: 8 to 12 breaths per minute
Explanation:
_refers to a balanced ecosystem
A hundred years ago there were 350 000 blue whales.
Now there are only about 10 000 blue whales.
Suggest why the blue whale population has decreased.
Answer: The primary threats currently facing blue whales are vessel strikes and entanglements in fishing gear .Also illegal hunting.
Explanation:
Answer:
Blue whales were significantly depleted by commercial whaling activities worldwide. The latest stock assessments of blue whales include data for various stocks, including areas of the North Pacific and western North Atlantic Oceans.
Whaling killed hundreds of thousands of blue whales from the early 1900s until it became illegal in 1966. Blue whales continue to be threatened by boats, anthropogenic noise, pollution with toxic chemicals, climate change (which may affect how the population of krill), and from fishing.
How can we prevent blue whales from extinction?
Adopt. Adopt a whale and help us protect these amazing creatures.
Join. You can join our team and help us save whales and dolphins.
Donate. Your gifts help us take action for whales and dolphins.
Shop. Support WDC by shopping for yourself or a friend.
Hope this helps. Thanks!
What does HIV/Aids have in common with the coronavirus?
Answer:
Both HIV, Aids and coronavirus comes from Viruses.
Answer:
both of them are pandemic diseases
Explanation:
both of them are pandemic diseases coz they have affected the whole world
who job is it to store nutrients,water, and waste in plant cell
Answer:
The answer is vacuoles.
Explanation:
It as known as the organelle to have storage in the cell. Vacuoles store water, food, and waste. ^_^
Answer:
Plumer i guess
Explanation:
when does gametogenesis occur
Answer: In females, most of gametogenesis occurs during embryonic development. Primordial germ cells migrate into the ovaries at week 4 of development and differentiate into oogonia (46,2N).
Explanation:
Answer:
.En la mujer, la producción de gametos u ovogénesis se inicia al tercer mes del desarrollo fetal y se suspende en profase I de leptoteno, esta meiosis se reinicia entre los 10 y 12 años de edad, que es cuando presentan primer ciclo menstrual.
Explanation:
What are the rules for writing the scientific name
Answer:
There are rules to follow when writing a scientific name. The genus name is written first.
The specific epithet is written second.
The specific epithet is always underlined or italicized.
The first letter of the specific epithet name is never capitalized.
can we say food chain is a sequence of eating and being eaten to transfer energy
Answer:
Yeah, Its a cycle of energy.
Answer: food chain duhhhh
How do urban gardens bring us closer to the food on our plate, to nature, and each other?
Answer:
It’s a way for us to be able to talk to each other without it being awkward.
Explanation:
Urban gardens are a way for us to be able to work and talk together it’s a good chance for us to befriend our neighbors. They also help as a learning center it provides the opportunity to learn from the other people around us.
which elements are essential for living organisms to survive
Answer:
Food, Water, Shelter, oxygen
Explanation:
Which of the following statements best describes the formation of volcanoes?
A.
At a transform plate boundary, the crusts slide against each other to form magma by frictional heat.
B.
At a convergent plate boundary, the oceanic crust is pulled beneath the continental crust, where magma forms and moves upward.
C.
At a divergent plate boundary, the pressure of seawater rushing into the oceanic crust rift creates a volcano.
D.
At a convergent plate boundary, the continental crust collides with another continental crust to form volcanoes.
Answer:
B). At a convergent plate boundary, the oceanic crust is pulled beneath the continental crust, where magma forms and moves upward.
Explanation:
Volcano is described as the fissure in the crust of the earth through which the molten rock, lava, or hot gases are allowed to escape from this chamber. The second option most appropriately states that 'the oceanic crust is pulled beneath the continental crust at a convergent plate boundary where the formation of magma takes place and makes it to the surface(through eruption in the form of lava).' The process can have both the creative as well as destructive impacts as it brings a lot of useful minerals that makes the soil rich and fertile while on the other hand, the ash is fatal for the environment. Thus, option B is the correct answer.
The statement which best describes the formation of volcanoes is: B. At a convergent plate boundary, the oceanic crust is pulled beneath the continental crust, where magma forms and moves upward.
A volcano can be defined as a mountain or hill that has a large circular or conical hole at the top through which volcanic ash, rock fragments, gases, dust, hot lava, steam etc., are expelled from the vent of a planetary-mass object, either at regular intervals or continuously.
A convergent plate boundary refers to a boundary where two (2) plates move towards each other, thereby, resulting in subduction or collision.
As a result of the oceanic crust being pulled beneath the continental crust at a convergent plate boundary, molten magma are formed and then moved upward as volcanoes.
In conclusion, the collision between two (2) plates as a result of subduction causes an oceanic crust to be forced underneath the mantle, thereby, forming volcanoes.
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3. If a daughter has an X-linked recessive disorder, such as color-blindness, she inherited the
trait from
a. her mother
b. her father
c. both parents
d. neither parents
Answer:
She inherited the trait from C: both parents.
Explanation:
The daughter, being female, has the chromosomes XX. Since the disorder is recessive, both of the chromosomes need to have the disorder's allele in order for it to activate. The daughter's chromosomes can be labeled as X(c)X(c); where the c stands for the color-blindness allele. She needs one X chromosome from the father, and one X chromosome from the mother. Both of these chromosomes contained the (c) allele, as said before, so the mother has one X(c) and the father has one X(c). This means that she inherited the trait from both parents. The final answer is C.
What type of sustainable development encourages enjoyment and conservation of biodiversity and habitats?
a.
Solar energy
c.
Ecotourism
b.
Organic farming
d.
Wind farming
What tissue makes up a bone?
Answer:
Bone tissue is a mineralized tissue of two types, cortical bone and callousness bone
Explanation:
Other types of tissue found in bones include bone marrow, endometrium, peritoneum, nerves, blood vessels and cartilage.
Which word best describes the nature of predator-prey dynamics in stable communities?
Answer:
Cyclic
Explanation:
It is cyclic because as the number of predators increase in the ecosystem, the number of preys decreases with time. This decrease in preys means lesser food resources for the predators which then decreases the population of the preys. As the predators decrease the number of preys starts to recover and increase in population.
The cycle goes on and on which makes it a cyclic relationship in the nature of predator-prey dynamics in stable communities
The word that described the nature of predator-prey dynamics in stable communities is Cyclic.
What is Cyclic?It should be cyclic since the no of predators should be raised in the ecosystem also the number of prey should be decreased along with time. Here the reduction of prey represents that there are fewer food resources due to which it reduced the preys population. Also, when the predators reduced the no of preys so it begins to recover due to which the population is increased.
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Which process connects glycolysis and the citric acid cycle?
A) lactic acid formation
B) acetyl CoA formation
C) electron transport
D) Krebs cycle
Answer:
c
Explanation:
How would the gravity change if the earth was farther away fro maybe sun?
Answer:
The closer the planet is to the Sun, the greater the pull of the Sun's gravity, and the faster the planet orbits.
Explanation: