Mendel always got close to a 9:3:3:1 ratio for phenotypes in the F2 generation of any dihybrid cross. If false, make it a correct statement

a. True
b. False

Answers

Answer 1

Answer:

True

Explanation:

It is true that Mendel always got close to a 9:3:3:1 ratio for phenotypes in the F2 generation of any dihybrid cross. This validates his law of independent assortment of genes.

The 9:3:3:1 is usually gotten from any dihybrid cross of F2 generation. The results given are always 9 offsprings containing dominant traits, 3 offsprings each which possess a dominant and recessive trait and 1 offspring with a recessive trait.


Related Questions

What results if a broken chromosomal fragment becomes reattached as an extra segment to a sister or non-sister chromatid? A Duplication B Inversion C Polyploidy D Nondisjunction

Answers

Answer:

The correct answer is option A "Duplication".

Explanation:

Chromosomal duplication is defined as a type of rearrangement of genetic material at which extra copies of a DNA fragment are created. In this case if a broken chromosomal fragment becomes reattached, this fragment will represent an extra copy, and therefore the resultant genetic material is considered a chromosomal duplication.

As human travel increases, the number of introduced species likely
decreases.
increases
stays the same
is eliminated

Answers

Answer: The correct answer to the question is option B

INCREASES.

As human travel increases(As humans move from one place to another),the number of introduced species likely increases because as humans move from one place to another,they introduce new species of organisms to their new environment.

These non-native species grow in this new environment,becomes economically important and doesn't pose any harm to their new ecosystem unlike invasive species that poses a substantial harm.

The number of introduced species are likely to : ( B ) Increases

As Humans migrate from one place to another they introduce new species into their new environment naturally or artificially.

Migration

The movement of humans or any type of organism comes with the introduction of new species because as they move they take along with them certain species that naturally do not belong to their new environment.

Hence we can conclude that As human travels The number of introduced species are likely to Increase.

Learn more about Human migration : https://brainly.com/question/1213023

Which characteristic does a virus have in common with a eukaryotic cell?

Answers

Viruses are not cells; they are a strand of genetic material within a protective protein coat called a capsid. They infect a wide variety of organisms, including both eukaryotes and prokaryotes. Once inside the cell, they use the cell's ATP, ribosomes, enzymes, and other cellular parts to replicate.

The characteristics that a virus cell possess with eukaryotic cell is that they both possess a genetic material.

What is an eukaryotic cell?

An eukaryotic cell is a cell that has a genetic material bound by membrane-bound nucleus.

A virus cell, on the other hand, is a cell that is incapable of replicating itself without a living host.

However, one similarity between the eukaryotic cell and viral cell is that they both possess a genetic material that stores their genetic information.

Learn more about cells at: https://brainly.com/question/3142913

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Scientists monitor the effects of a deadly parasite in a host. What trends will they most likely see?
A. As the parasite population increases, the host population decreases.
B. As the parasite population increases, the host population increases.
C. The host population decreases only if the parasite population decreases.
D. The host population will remain the same regardless of whether the parasite population increases or decreases.

Answers

I’m assuming the answer is A. As the parasite population increases, the host population decreases. Parasites often kill their host if not removed so it would make sense for that to be the answer. :)

Answer:

a

Explanation:

WHAT ARE THE OUTSIDE RAW MATERIALS USED BY PLANTS FOR PHOTOSYNTHESIS

Answers

The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.

Object is not moving Answer 1 Choose... Object is moving towards observer Answer 2 Choose... Object is moving away from observer Answer 3 Choose...

Answers

Answer:

Object is moving away from observer.

Explanation:

If a force is applied to an object it starts moving. The object will move towards the observer, this is known as Doppler effect. It is when an observer or the thing under observation moves. There is change in its position due to a force exerted on it. The motion of the object also depends on the direction of force.

The gallbladder is most accurately described as:________ A. The source of urea B. The storage site for fat and minerals C. The duct that drains the tail of the pancreas D. A distensible sack that concentrates and stores bile

Answers

Answer:

D. a distensible sack that concentrates and stores bile

Explanation:

The gallbladder is a small pouch that sits just under the liver and stores bile that is secreted from the liver until it is released into the intestines.

Hope that helps.

CER

Can someone help me with these questions? Thank you.

Answers

Answer:

1.C

2.E

3.C

4.R

5.E

6.R

7.E

8.C

9.E

(do not take my word for it maybe wait for someone else to answer to compare to mine)

Part D What strengths and weaknesses do you see in your improved model?

Answers

Answer:

The new model correctly shows the process of oxygen and carbon dioxide exchange that takes place in the capillaries. However, it does not show that this oxygenated blood travels back to the heart for distribution to the body. It also does not show the structure of the alveoli.

Explanation:

PLATO answer

Neuron A communicates with neuron B. The ________ of neuron A releases a signal that activates a(n) ________ of neuron B.

Answers

Answer:

Axon terminal ; dendrite

Hope this answer correct :)

Neuron A communicates with neuron B, and the axon terminal of neuron A releases a signal that activates the receptors present on neuron B. The neurotransmitters are attached to the ligand-gated channel on neuron B.

What is nerve impulse transmission?

The nerve impulse transmission takes place between two neurons, and then in this way, from the sensory organs, the message passes to the spinal cord and the brain. The synapse is formed between the two neurons, such as the presynaptic neuron that releases the neurotransmitters, and this activates the ligand-gated channel of the postsynaptic neuron. Due to this interaction, the neurons get excited and activated.

Hence, neuron A communicates with neuron B, and the axon terminal of neuron A releases a signal that activates the receptors present on neuron B. The neurotransmitters are attached to the ligand-gated channel on neuron B.

Learn more about nerve impulse transmission here.

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steps of Biological method of study taking malaria as an examples

Answers

Explanation:

The different steps which are involved in biological method are the the invasion, the rapid division followed by the spread of infection. ... Malaria results in infection after the bite of the female anopheles mosquito. The parasites enter the bloodstream. as a result of this there is predominant infection.


which of the following is not irrational number?
(1)√2
(2)2/√6
(3)√36/1296
(4)-√6+6

Answers

Explanation:

hi !!

here i think all areirrational expect root 36/1296,

1. root 2= root 2= 1.414213562

2. 2/root 6= root 6 /3 = 0.8164965809

3. root 36/1296=1/6=1.66666667

4. - root 6+6= -2 root 3 = -3.464101615

so, they are extended and dont have exact value so all are irrational expect no. 3 because it can be expressed in 1/6 fraction form but others will come on root form.

Hope it helps...

Answer:

[tex]\frac{\sqrt{36} }{1296}[/tex]

Explanation:

[tex]\sf A \ rational \ number \ can \ be \ expressed \ as \ a \ quotient \ of \ two \ whole \ integers.[/tex]

[tex]\sqrt{2} = 1.41421356237...[/tex]

[tex]\frac{2}{\sqrt{6} } = 0.816497...[/tex]

[tex]\frac{\sqrt{36} }{1296} =\frac{6}{1296} =\frac{1}{216}[/tex]

[tex]-\sqrt{6} +6= 3.55051...[/tex]

[tex]\sf The \ rational \ number \ from \ the \ list \ is \ \frac{\sqrt{36} }{1296}[/tex]

What are the advantages of having two chromogens cells an one? The full form of DNA.

Answers

Have extra set of chromosomes compared to other species that have the same but fewer set is being called polypliod organisms are constantly under assault from their environment. Having extra set of chromosomes make them better able to cope with the pressures that thretend to wipe them out.

Full form of DNA is Deoxiribose Nucleic Acid

Answer:

Deoxyribonucleic Acid

Explanation:

Why is the top part of Mt.Everest the coldest part if the sun is practically shining above it?

Answers

Answer:

As air rises, the pressure decreases. It is this lower pressure at higher altitudes that causes the temperature to be colder on top of a mountain than at sea level.

Answer:

Hey there!

The sun is so far away, it has little effect on the temperature at different elevations. Also, Mt. Everest's top is very high in altitude, and higher altitudes have cooler temperatures.

Let me know if this helps :)

Describe five of these properties and provide an example of each: Hydrogen bonding, cohesion and adhesion, surface tension, heat of vaporization, specific heat, density, and universal solvent

Answers

Answer:

Explanation:

Hydrogen bond is an intermolecular force of attraction, it occur between a proton in a molecule and an electronegative atom in the another. It is weak bond and can be found in water molecule.

Cohesion is force of attraction thst occur when molecules are attracted to other molecules of the same type

this can be found in hydrogen bonding.

Adhesion occur when molecules are attracted to different substances. It can be founf in water when reaction with other substance

A universe solvent is a substance that is used to dissolves many substance. Example is water it can be used in dissolving many substance.

Surface tension is the ability of a liquid surfaces to reduce into the minimum surface area. It allows some insect that are less dense to float in water

Head of vapourization is the amount of heat required to change a liquid into a vapor. Heat to convert water into vapour

Answer:

pH

Explanation:

"The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for 'power of hydrogen' and numerical value for pH is just the negative of the power of 10 of the molar concentration of H+ ions."

hope this helps :)

Rima eat guava explain how the teeth tongue and sliva will help to break it down​

Answers

Answer:

Please find the role of teeth, tongue and saliva in digesting guava below

Explanation:

Digestion is generally the process of breaking down complex food substances into their simplest form. However, as easy as this sounds, there are series of processes that must take place in between to achieve the final result.

Once a food substance like guava enters the mouth (ingestion), it initially gets chewed by the TEETH in order to break it down to smaller masses that can be swallowed. During the process of chewing, the TONGUE helps to move the food around the mouth and later helps push it down the gullet/digestive tract. SALIVA, on the other hand, creates a moisturizing environment for the food to form a Bolus (round mass of food ready to pass down the esophagus). The saliva also contains an enzyme called AMYLASE that helps chemically degrade starch content of the food before passed through the digestive tract.

Please if you can, please help..
What is an allele that isn't expressed called?
Dominant allele
Recessive allele
Genotype
Phenotype
The final phase of translation, called termination, is signaled by three nucleotides, called a __________, that mark the end of a polypeptide chain.
Plasmid
Exon
Intron
Stop codon

Answers

Recessive allele
Stop codon

What is an example of medicines whose molecular structure has been designed to interact with specific target molecules in living things?

Answers

Answer: G protein- coupled receptor

Explanation:

Drug target is when a native protein activity in the body is modified by a drug resulting in a desired therapeutic effect.

G protein is an example of target drug that has been deisgned to modified the affect of certain protein in the body to aid treatment.

The first thing is to Identify the biological origin of the disease and then the target that can be used to combat the Ailment.

Which plant cells might not contain any chloroplasts?

Answers

Answer:

roots

Explanation:

please mark as brainliest :)

Help I don’t understand

Answers

Answer:

i don't understand sorry

Answer:

I think your supposed to write what happens in each box for the outcome of each situation like what happens in the filtration in Miguels blood test.

Explanation:



Choose all the answers that apply.

Rapid burial _____.

increases exposure to oxygen
decreases exposure to oxygen
slows down the rate of decay
prevents scavengers from eating organism remains





















































































































































































































Answers

Answer:Organisms decompose more quickly when they are in contact with oxygen. Most environments exposed to the open air are in contact with plenty of oxygen, so the soft tissues of dead organisms, whether plants or animals, decay quickly. ... For an organism to become a fossil, it must not decompose or be eaten.

Explanation:

2. Explain the factors that led Wilson to the idea of (a) studying small islets, (b) fumigating them, and (c) observing the recolonization of species.

Answers

Answer and Explanation:

The ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could be inhabiting on an island.  

Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are the distance from the mainland and the size of the island.  

At the same time, these factors affect inmigration and extinction rates. According to the theory, islands that are closer to the continent have higher possibilities of receiving immigrants than those islands that are located farther from the mainland. This is the effect of distance.  

The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.  

In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.

Experiment:

To prove that the observations about the species richness and its relation to island size and distance to the continent were not a casualty, manipulation experiments were developed. These experiments helped to prove how the colonization process take place from cero. To observe the entire process of ecological succession and the tendencies proposed by the island biogeography theory Wilson and Simberloff (1970) eliminated the fauna on some islands to observe how they were recolonized from the continent. They fumigated the mangler island and studied these islands to account for the variation in arthropod richness over time. They studied many islands classified by distance. On each island, the richness increased at different rates.  The island closest to the continent received more immigrants and is colonized faster than the other ones, reaching its original richness faster. The farthest island was recolonized but at a much lower rate and it does not reach equilibrium while the study was going on. Although, it was expected to reach equilibrium with time.  

12. What group of organisms are most in danger of extinction?

those with small populations

both a and b

those with large populations that breed quickly

those that migrate or need special habitats

Answers

Answer:

Both A and B

Explanation:

CH2OH О, a CH3 H OH OH Н он Identify the macromolecule pictured above. O a Ob Protein Carbohydrate Lipid , ос Od Nucleic Acid​

Answers

Answer:

Although the pictorial representation is not clear but the question can be answered based on the known structure of each biomolecule. The answer is:

Carbohydrate

Explanation:

Carbohydrate is one of the four biological molecules in living systems. Carbohydrates are composed of long chains of carbon, hydrogen and oxygen in a 1:2:1 ratio i.e (CH2O)n empirical formula.

The structure of carbohydrate is composed of a ketone (C=O) or aldehyde (CHO) functional group and hydroxyll groups (OH). The simplest unit of any carbohydrate is called a monosaccharide. Hence, from the above structure in the question, which consists of long chain of carbon, hydrogen and oxygen atoms, it can be identified as a CARBOHYDRATE.

Which statements accurately describe the roles of water on earth

Answers

Answer:

C.

Explanation:

It carries cold water from the equator to the poles

A Mesopotâmia e o Egito antigo foram as primeiras culturas que desenvolveram métodos de irrigação. Um dos métodos eram os canais, mas quando não funcionavam, os egípcios precisavam inventar ferramentas para bombear água do Nilo e de outras fontes. E dessa forma, desenvolveram o sistema de canais. Os governantes egípcios colocaram uma enorme importância no sistema de canais do país e os governantes regionais foram responsáveis pela escavação e reparação das estruturas. Os canais usavam a água do Nilo quando o rio estava na época da cheia e inundava algumas terras... Podemos dizer que antes mesmo dos egípcios, os equinodermos tinham o mais complexo sistema de distribuição de água por pressão do mundo. Você concorda com essa afirmação? Justifique usando informações que você aprendeu durante a aula do equinodermos.

Answers

Answer:

ffffffffggggggggggbhgggggghhhhhhgffghgfffddñbgggggggggggggggggddrryyyygfreeeeeerrrrrrrdfbbbbhhhgggggghhyyyggggyyyyyygggttggggggyyygggygbbbggggghhhhyyhhhyyyyuyuuuuuuyybggggggggggggtttfggf

Explanation:

vvfdd

Proteins are composed of which of these subunits?

Answers

Answer:

Proteins are polymers; the monomers which make them up are amino acids.

Hope this helped!!!

amino acids is your answer!

A person is dehydration and they start to bleed from their nose. But they're bleeding from only one nostril. Why?

Answers

Dryness of the nasal mucosa.
A dry nasal mucosa causes itching and people often scratch inside the nose due to this. It damages the delicate inner lining over the nostrils. Even if one does not scratch, the capillaries present there can rupture and bleed spontaneously due to excess dryness. This happens because the nasal mucosa is very thin and fragile. In conclusion, bleeding from one nostril is caused by too much Dry air — when your nasal membranes dry out, they're more susceptible to bleeding and infections.

The lining of your nose contains many tiny blood vessels that lie close to the surface and are easily damaged.

The two most common causes of nosebleeds are:

Dry air — when your nasal membranes dry out, they're more susceptible to bleeding and infections

Nose picking

What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?

Answers

Answer:

Myosin

Explanation:

Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement

Answer: actin

Explanation:

please please help!!

Answers

Answer:

Carrying capacity was reached due to the abundance of prey

Other Questions
You are considering buying a perpetuity contract from your insurance company that will pay you $500 annually where the payment will grow by 3% each year. Using a discount rate of 9%, the most you should be willing to pay for this contract is closest to: Please help quick ! If QR = 3x; LM - 8x -17; and ST = 31 calculate LM. find the value of x if 64=xmod9 The profit-maximizing monopolist produces _____________ units and charges a price of _____________. PLEASE HELP Two six-sided fair dice are rolled. The probability that at least one number is odd and the sum of the two numbers is even is *blank . The probability that exactly one number is 6 and the product of the two numbers is at most 15 is * blank . Prove that the diagonals of a parallelogram bisect each other. The midpoints are the same point, so the diagonals _____ What were the terms of the agreement in which the missiles were finally removed from Cuba? Group of answer choices The U.S. had to help develop better atomic testing methods Soviet Union surrenders to the U.S. U.S. promises to not invade Cuba/ U.S. removes missiles from Turkey U.S. disarms all nuclear arms and Soviets would do the same Please answer this correctly without making mistakes Link the nation with each statement: (1) offers an apprenticeship program for non- college youth that leads to a job; (2) leaves young people to find jobs on their own. A) (1) Germany: (2) the United States B) (1) the United States; (2) the United Kingdom C) (1) the United States; (2) Japan D) (1) Germany: (2) Japan Read the summary of the main ideas of the article below."Fortnite," a popular online video game, recently had its first ever World Cup finals in New York City. Top "Fornite" players like Hayden Krueger and Davis McClellan competed on the online battleground starting on July 26.Which answer choice would complete the summary?ADavis McClellan made it into both the solo death match and the duo finals.BKyle Giersdorf took home the first-place prize, and Emil Bergquist Pedersen and David W. won the duo championship.CThe 100 Thieves team enjoyed stirring things up during the competition by talking trash on social media.DThe inaugural event was held at the 23,000-plus-seat Arthur Ashe Stadium. Write in words how we would say the following3 square Select the items which limited the power of the colonial governments.A. presidentB. the ParlimentC. secretary of defenseD. the king TRUE OR FALSE Trench Warfare is the use of tanks to conquer an enemy city during wartime. Please help me with this geometry question:(( Can someone please check my answer? I really need help with this Read the following excerpt from "The Most Dangerous Game" and answer the question. Rainsford sprang up and moved quickly to the rail, mystified. He strained his eyes in the direction from which the report had come, but it was like trying to see through a blanket. He leaped upon a rail and balanced himself there, to get greater elevation; his pipe, striking a rope, was knocked from his mouth. How does the figurative language in this passage contribute to the plot of the story? It builds suspense as we realize that Rainsford hears gunshots but cannot see anything. It serves as a symbol of why Rainsford must struggle to see from the deck of the boat. It explains why Rainsford was balancing precariously to see and thus fell off the boat. It does not add anything to the plot of the story If the Earth-Sun distance were doubled, the intensity of radiation from the Sun that reaches the Earth's surface would If it is now January, what month will it be 500 months fromnow?(a) January(b) June(C) September(d) December Although used condom should not be flushed down a toilet, if a person did flush a used condom, this type of wastewater pollutant would represent