Answer:
Duplications arise from an event termed unequal crossing-over that occurs during meiosis between misaligned homologous chromosomes. The chance of it happening is a function of the degree of sharing of repetitive elements between two chromosomes.
Explanation:
This is what I found I'm not sure
how does the force exerted on the same mass differ between short and long bones
Answer:
Muscles, bones, and joints are some of the most interesting applications of statics. There are some surprises. Muscles, for example, exert far greater forces than we might think. Figure 1 shows a forearm holding a book and a schematic diagram of an analogous lever system. The schematic is a good approximation for the forearm, which looks more complicated than it is, and we can get some insight into the way typical muscle systems function by analyzing it.
PLZ help quick I really really really really really really need help
How do we know that humans
are causing the Earth to warm
and the climate to change?
Explanation:
we can track climate patterns back to us on earth and the excessive use of fossil fuels and other gasses contribute to this - its basically proven that we are the reason climate change is a thing. climate will change by itself by us humans are causing this to be much faster than it should be
Which of these is a natural resource?
A. money
B. oil
C. bread
D. sand
Answer:
B
Explanation:
Which option describes adaptation?
Select one:
A. Parents pass their genes to their offspring,
B. Only the strongest individuals in a population are likely to survive.
C. Over time, populations gain traits that make them more suited for the
environment
D. if there are enough resources, the population will grow
Answer:
C
Explanation:
Adaptation was first purposed by Charles Darwin, he stated that as the environment changes the animals will gain adaptations suitable for the environment. Therefore, C is the correct answer.
Have a nice day.
What happens to the moon if Earth’s mass decreased?
answer:
if earth's mass decreased, then the moon would go further away.
explanation:
the gravitational force of earth depends on its massif the mass decreased, then the gravitational force would also decrease which means that the moon would go further awaygravity is the reason why the moon is close to the earth and why we can see it at nightWhich nation did the United States compete with during the Space Race?ChinaJapanthe Soviet Unionthe United KingdomMark this and return
Answer: Soviet Union
Explanation:
Answer:
I think it's "The Soviet Union"
The biceps reflex tests a muscle spindle reflex arc (like the patellar reflex). The biceps brachii is innervated by the musculocutaneous nerve and the triceps brachii is innervated by the radial nerve. When the biceps tendon is tapped with a hammer, action potential generation ___________ in the musculocutaneous nerve and _____________ in the radial nerve.
Answer:
The biceps reflex tests a muscle spindle reflex arc (like the patellar reflex). The biceps brachii is innervated by the musculocutaneous nerve and the triceps brachii is innervated by the radial nerve. When the biceps tendon is tapped with a hammer, action potential generation increases in the musculocutaneous nerve and decreases in the radial nerve.
Explanation:
The biceps reflex test is performed to evaluate the functionality of the C5 and C6 reflex arcs and is done by quickly depressing the biceps brachii tendon by using a reflex hammer.
When the biceps brachii tendon is stimulated, the normal response would be a reflex contraction of the biceps brachii muscle, producing the flexion of the elbow. The contraction of this muscle is produced thanks to an increase in the action potential generated in the musculocutaneuous nerve -because this is the nerve that innervates this muscle-, which also generates a decrease in the action potentials in the radial nerve -given that this nerve innervates the antagonist muscle of the biceps brachii, the triceps brachii-.
PLS HELP FAST NO LINKS!
Fern studies the changes in the atmosphere and makes predictions about what the temperatures and precipitation are going
to be for that day as well as the rest of the week. What are these predictions called?
A. thermometers
B. meteorologists
C. forecasts
D. climates
its thermometer
A THERMOMETER measures the air temperature. Most thermometers are closed glass tubes containing liquids such as alcohol or mercury.
thats why
What results from meiosis of a diploid cell?
Answer:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell
Explanation:
Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. ... The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
Giving brainlist PLSS help
Are viruses living or non- living?
Provide short explanation
No links please
Answer:
Virus are non living Things :)
In 95% of cases of Down's syndrome, there is one extra chromosome (number 21) in every cell. This _____________ condition is most likely the result of______________ (Use the choices below to best fill in the blanks)
Answer:
Genetic disorder.
Abnormal cell division.
Explanation:
Down's syndrome is a genetic disorder condition which is caused by the abnormal cell division during the development of the sperm cell or the egg cell. Due to abnormal cell division, the patient receives and extra copy of chromosome which is the cause of Down's syndrome. This is a genetic disorder which means that this disease occur during the formation of baby when the sperm and egg cells fuse together so this abnormal cell division occur in the sperm or egg cell of the patient's parent.
What building block is DNA made of
Answer:
nucleotides
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
(I HAVE 20min TO ANSWER THIS, NEED HELP) Based on the field lines, what are the charges of the
objects?
OX: positive
Y: negative
OX: negative
Y: positive
O X: negative
Y: negative
OX: positive
Y positive
Answer:
X: positive
Y: positive
Explanation:
The charges of the objects are:
OX: positive
Y: negative
The concept of electric field lines is a way to visualize the electric field around a charged object or group of objects. Electric field lines point in the direction of the electric field at each point, and the density of the lines corresponds to the strength of the electric field.
By following the direction of the field lines, we can make an inference about the relative charge of the objects. For example, field lines that originate from a positive charge will terminate on a negative charge, while field lines that originate from a negative charge will terminate on a positive charge.
Therefore, based on the field lines, we can determine that:
Option 1 is incorrect, as the field lines terminate on a negative charge.
Option 2 is incorrect, as the field lines originate from a negative charge.
Option 3 is incorrect, as the field lines originate from a negative charge and terminate on a negative charge.
Option 4 is correct, as the field lines terminate on a positive charge.
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A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that
the organism is an animal?
It is multicellular and can move itself from place to place.
It is heterotrophic and unicellular.
It makes food from sunlight and is eukaryotic.
It is prokaryotic and can move itself from place to place.
Answer:
i think that the answer from your choices would be that
its multicellular and can move itself from place to place.Explanation:
A scientist discovers a new organism and is trying to classify it likely indicate that the organism is an animal, It is multicellular and can move itself from place to place.
Which is multicellular organism?Multicellular organisms are those composed by multiple cells. They are typed in 13 major groups of terrestrial living beings, including animals, plants, fungi, ciliates, algae, and foraminifera.
Thus, option "B" is correct.
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The following diagram shows the branching tree diagram for some animals.
A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.
Which two organisms share the least number of derived characteristics?
Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee
Answer:
Shark and a Chimpanzee
The two organisms that share the least number of derived characteristics are Kangaroo and chimpanzee.
What is branching tree diagram?Branching tree diagram is a diagram that illustrate different groups or taxonomic group of organisms and how they are connected to each other.
Therefore, The two organisms that share the least number of derived characteristics are Kangaroo and chimpanzee.
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What were pregnant women exposed to and what were some of the ways it affected their
children?
(the devil we know.)
Answer:
Here is the answer and some! I hope it helps.
What were pregnant women exposed to and what were some of the ways it affected their children?
Teflon and they had deformities
2.What is the active ingredient in Teflon?
Fluorine
3.When the rats were exposed to c-8 what were some of the effects?
Developed cancers
Explanation:
Tasha went on a trekking expedition to a mountain range during her vacation. When she reached a particular elevation, it started raining heavily.
Which sphere of Earth is most responsible for this sudden weather change?
The
v is most responsible for the weather. Its lowest layer, the
contains most weather phenomena.
Answer:
It should be geosphere.
Explanation:
HELP
Oldest to youngest
Answer: Oldest to Youngest: B,E,C,D,A
Explanation: Hope that helped! :)
The following substrate is completely oxidized to CO2 by a cellular homogenate containing all necessary enzymes and coenzymes . It is assumed that the glycolysis, the citric acid cycle and oxidative phosphorylation are fully active and that the glycerol-3-phosphate shuttle is functional. What is the net gain of ATP molecules after the complete degradation of one Glyceraldehyde 3-phosphate molecule
Answer:
The correct answer is - 19 ATP.
Explanation:
One molecule of dihydroxyacetone phosphate fully oxidizes and generate 19 molecules of ATP by the following stochiometry
Direct ATP- 2
ATP from NADH ( 5X3)= 15
ATP from GTP 1
ATP from FADH2 1 or 1.5
Total 19 or 19.5
My eyesight is weak plzz tell me how can i improve?❤
Answer:I will gladly love to help you but what can I improve you with.
Explanation:
What is the difference between mass extinction and background extinction?
The difference between mass extinction and background extinction is described as :
Background extinction has a tendency to be sluggish and slow however not an unusual place with a small percent of species at any given time fading into extinction throughout Earth's history. Mass extinction includes the demise of 75% or greater species in a geologically brief time period because of catastrophic events.
What are the types of Five Extinctions?Ordovician-Silurian Extinction: 440 million years ago.Devonian Extinction: 365 million years ago.Permian-Triassic Extinction: 250 million years ago.Triassic-Jurassic Extinction: 210 million years ago.Cretaceous-tertiary Extinction: sixty-five Million Years Ago.Thus it is clear that mass extinction differs from background extinction.
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The lac repressor in bacteria _______, and when lactose is present, the lac genes ______. Activates transcription of lactose-metabolism genes; are transcribed Activates transcription of lactose-metabolism genes; are NOT transcribed Inhibits transcription of lactose-metabolism genes; are transcribed Inhibits transcription of lactose-metabolism genes; are NOT transcribed
Answer:
Inhibits transcription of lactose-metabolism genes; are transcribed
Explanation:
The lac gene is a structural gene in bacterial cells that encodes the synthesis of lactose-degrading proteins or enzymes in the bacterial cell. However, the expression of this gene is regulated at the transcriptional level. In the absence of lactose sugar in the cell, lac repressor binds to the operator region of the gene and inhibit the transcription of lactose-metabolism genes (Lac A, Y and Z).
However, if LACTOSE sugar is present, the lac repressor protein is inactivated and removed as a result of its binding to allolactose. This allows RNA polymerase to bind to the promoter and transcription of lac genes will go on.
how do floods affect abiotic and biotic factors
Water is important to every organism. A great portion of chemical reactions that organisms use take place in water, so without water, organisms would not be able to metabolize anything. ... Primary consumers (herbivores) would suffer twofold as their prey (the plants) die and their water source disappeared.
Consider the following scenario:
An animal is born with a shorter tail. This makes no difference to its ability to survive or reproduce, but as a result of pure luck, the animal survives, reproduces, and passes its shorter tail down to its offspring. Over time, the species develops a shorter tail.
What type of process is described in this scenario?
Answer:
1. genetic drift
2. genetic modification.
3. The fish experienced an evolutionary change because of genetic drift.
4. A farmer intentionally breeds oranges to be more resistant to aphids.
5. evolution.
Explanation:
100% Evolution Versus Natural Selection Quick Check
Recessive alleles are the alleles that get masked and dominant are the traits that get expressed. The short tail of the animal is a recessive trait. Genetic drift is described in the scenario.
What is Genetic drift?The alteration of the frequency of the existing allele for a specific trait with another or the recessive due to random sampling is called genetic drift. The sample allele plays a role in the determination of the survival rate and the reproduction rate of the organisms.
Natural selection is the process of choosing the organism with the better trait qualities that can survive and reproduce in the altered environment, while artificial selection is the man-made selection.
Genetic modification is the manipulation of the genes or the genetic material of the organisms either naturally by mutation or through genetic engineering by humans. So, the adaptation of the short tail in the organism is not genetic modification.
Therefore, the process of genetic drift is explained in this scenario.
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1.
Select two organisms with very different traits (e.g., moss and chimpanzee).
Organism 1:
Organism 2:
Number of genes in
common
Answer:A dog and a bird
Explanation:
Dogs have genes that allow them not to fly. birds get wings that were passed down from their parents
I need help with a quiz.
Read each past tense verb form. Then decide if it is regular or irregular.
bought
regular
irregular
Answer:
it is irregular
Explanation:
hope this helps
What are the roles of light, carbon dioxide, and water
molecules in the production of food and oxygen in photosynthesis?
Answer:
The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas. After the sugar is produced, it is then broken down by the mitochondria into energy that can be used for growth and repair.
Extracellular signal molecules that are hydrophilic must bind to a cell-surface receptor in order to signal a target cell to change its behavior. These are examples of hydrophilic hormones in animals: A. tyrosine-derived epinephrin and norepinephrin B. insulin and glucagon C. serotonin and melatonin (tryptophan-derived mammalian neurotransmitters D. All of the above E. None of the above
Answer:
The correct answer is - D. all of the above.
Explanation:
Hydrophilic hormones are the hormones that can not pass through the cell membrane as they are poorly lipid-soluble and cannot pass through cell membranes and bind the receptors present on the surface of the membrane.
Insulin and glucagon are peptide hormones that bind to a receptor in the target cell's membrane surface. Norepinephrine and epinephrine are catecholamines that are hydrophilic in nature. Seratonin and Melatonin are also bound on the surface receptor due to their hydrophilic nature.