You perform a test cross of the dihybrid AaBb and score the phenotypes of 1000 progeny. Assuming independent assortment, how many of the progeny do you expect to display the dominant phenotype for both the A and B genes?

Answer:

They use advance technologies in agriculture.

Explanation:

There is a direct relationship between thriving civilization and it’s agriculture system because they use advance methods and technologies in agriculture instead of traditional practices. They use heavy machinery for tillage in order to save the time, use high yielding varieties, use proper dose of fertilizers, use of pesticides and weedicides in order to protect the crop. They harvest the crop by using thresher in order to avoid post harvest losses. In short, they use all technologies available to make a higher yield in order to earn more profit.

Answer:

Its C, They can use reliable web sites or books.

Explanation:

Answer:

b. False

Explanation:

Increasing the frequency of muscle stimulation causes wave summation to occur, which causes an overlap of muscle twitch. When this muscle summation happens, the force generated in the muscle increases. This means that stimulating the muscle every 0.5 seconds will generate less muscle contraction force than when stimulated every 0.05 seconds  

Answer:

The µg of DNA put into the tube is 0.3 µg.

Explanation:

Here in this question, we are interested in calculating the µg of DNA put into the DNA tube.

This can be calculated using a mathematical formula.

Mathematically;

Total amount of DNA in µg = concentration in µg/ µl X volume in µl

= 10 µg/µl X 0.03µl = 0.3 µg.

ʏᴏᴜʀ ᴀɴsᴡᴇʀ

Ratio level is the correct option.

Scales of measurement provide information regarding the measurements and the values that have been assigned to the variables within it. Ratio level of data is a quantitative type of data and they have an absolute zero.

Answer:

The correct answer is -  Excitation; and Gi receptors.

Explanation:

ACh or acetylcholine is a secondary messenger that cause excitation by propagate the signal to the muscles from neurons. It is helps in transport the signal from the motor neurons to the muscles.

ACh release from the parasympathetic neurons and can directly excitation to the smooth muscle by binding to the Gi receptors or muscarinic receptors and activate them for excitation and contraction.

Thus, the correct answer is - Excitation; and Gi receptors.

explain the  question more

Answer: The stable and proximal attachment

Explanation:

Answer:

Boost immunity power( follow these):

1. Have enougn sleep.

2. Be happy...overcome stress.

3.Do exercises frequently.

4. Have regular check ups ;these may help to diagnosis on early stage.

5. Consume the foods which boosts immunity.

6. Be mentally strong.

Explanation:

There isn't proved ideas ...however, we can fight by making our immune system strong...

HIT LIKE

Answer:

Explanation:

metal can become magnetic if they have many spinning electron. When the majority of atoms spin in the same direction the strong magnetic field is produced the direction of electron spin determine the direction of magnetic field

Answer:

chemical

expand

acid rain.

rushing water.

runoff

glacier

wind.

windbreaks

Explanation:

The correct terms for the given fill in the blanks are:

1. A tree root breaking a rock into smaller fragments is an example of both chemical and mechanical weathering. Weathering is the breakdown of rock into smaller particles.

2. The rocks when are exposed to heat, expand contributing to thermal stress.

3. Sulfur dioxide and nitrogen oxide are harmful gases, which react with water in the air to form acid rain.

4. The agent of erosion involved in stream erosion is referred to as rushing water.

5. The ground is so saturated that it can't absorb rainfall or heavy and quick rainfall does not allow the ground to absorb the water forming runoffs.

6. Glacier is a huge, heavy, moving body of ice that picks up rocks and sand and erodes the ground beneath it as these materials scrape across it.

7. Hot arid climates are prone to erosion by wind.

8. Windbreaks refer to the rows of trees and shrubs planted to protect fields from wind erosion.

To know more about weathering, refer to the following link:

https://brainly.com/question/14426457

Answer: Option E.

All of these are used by parietal cells.

Explanation:

Parietal cells are found in the stomach and they produced gastric acid(Hcl)..

HCl is produced when water mixed with carbondioxide in the parietal cell to produced carbonic acid which is catalyses by carbonic anhydrase. The carbonic acid then dissociates into hydrogen ion and carbonate ion.

Parietal cell produce HCl due to histamine (via H2 receptors), acetylcholine (M3 receptors) and gastrin (gastrin receptors).

Therefore it uses channels, pumps, antiporter.

Answer:

neurons are able to communicate through electrical impulses for example when a stimulus is detected the receptor cells transfer electrical impulses to the sensory neurons which is passed onto the relay neurons in the central nervous system and relayed to the motor neurons. the motor neurons travel with the electrical impulses which are transferred to the effectors to cause a response. However neurons travel and commu icate through synapses

Answer:

A retrovirus is a type of RNA virus that inserts a clone of its genome into the DNA of a host cell that it invades. An example of a retrovirus would be HIV.

Hope this helps! :)

Explanation:

A retrovirus is a specific kind of RNA virus that, when it infects a host cell, will insert a clone of its genome into the DNA of the host cell. HIV is an example of a retrovirus that may infect humans.

A kind of RNA virus known as a retrovirus copies its genome into the DNA of the host cell it invades. HIV is a prime example of a retrovirus.

A virus that employs RNA as its genetic material is referred to as a retrovirus. When a cell becomes infected with a retrovirus, the retroviral RNA is converted to retroviral DNA, which is then inserted into the DNA of the host cell.

Acute retroviral syndrome symptoms, which include headache, nausea, diarrhoea, and body pains, are comparable to those of the flu and go away on their own in a few of weeks. A person who has acute retroviral syndrome may no longer have any symptoms, yet they are nonetheless HIV-positive and remain contagious.

Learn more about retrovirus, here:

https://brainly.com/question/29172801

#SPJ2

Answer:

C. The study will provide the potential risks and benefits of the project and help the town make an informed decision.

Explanation:

Answer:

c is the anwser

Explanation:

I took the test

Answer:

to reproduce sexual is better

Explanation:

i think if your asexual you don't feel attraction so you probably wont have intercourse and not reproduce whereas if your sexual you will

Answer:

tough question

Explanation: asexual is a broad broad broad spectrum some people who are ace are willing to have intercourse just wont find pleasure in it or some people are willing to have intercourse every once in a while or when they feel like it so technically ace people can reproduce just probably more likely that they wont but the question is also probably not the best because not all ace people are the same

Answer:

the example of reproductive isolation is temporal isolation, ecological isolation, behavioral isolation, mechanical isolation.

Answer:

The correct answer is - option C.

Explanation:

Chemical energy is the energy that every substance or chemical have and its not affected by the presence or absence of the enzyme, while the activation energy is the required energy to initiate for a chemical reaction. If the energy of the chemical reaction is less than the activation energy reaction will not take place.

Presence of a enzyme lowers the amount of the energy for the initiating the reaction which is activation energy and the chemical reaction takes place.

Thus, the correct answer is - option C.

Answer:

The paravertebral ganglia is the sympathetic ganglia where the pre-ganglionic and post-ganglionic neurons synapse.

Explanation:

Answer:

d all of these are valid generalizations

Answer:

post-translation

Explanation:

When a eukaryotic gene is transcribed in the nucleus, the primary transcript (freshly made RNA molecule) isn't yet considered a messenger RNA. Instead, it's an "immature" molecule called a pre-mRNA.

The pre-mRNA has to go through some modifications to become a mature mRNA molecule that can leave the nucleus and be translated. These include splicing, capping, and addition of a poly-A tail, all of which can potentially be regulated – sped up, slowed down, or altered to result in a different product.

Most pre-mRNA molecules have sections that are removed from the molecule, called introns, and sections that are linked or together to make the final mRNA, called exons. This process is called splicing.

In the process of alternative splicing, different portions of an mRNA can be selected for use as exons. This allows either of two (or more) mRNA molecules to be made from one pre-mRNA.

Answer:

RNA processing

Explanation:

RNA processing. Splicing, capping, and addition of a poly-A tail to an RNA molecule can be regulated, and so can exit from the nucleus. Different mRNAs may be made from the same pre-mRNA by alternative splicing.

Answer:

Eubacteria are PROKARYOTIC organisms characterized by the lack of membrane and have peptidoglycan on cell wall when present.

Explanation:

They include most of the familiar bacteria such as E.

Hope it helps.

Answer: D

only green plants

Answer:

[tex]\large \boxed{\mathrm{D. \ Photosynthesis}}[/tex]

Explanation:

Photosynthesis is a characteristic present in plants. Photosynthesis is a process where plants transform light energy into chemical energy. Reproduction, respiration, and excretion are all characteristics of living organisms.

Answer:

False

Any discovery must first be tested and have an explanation

Answer:

The loop of henle is a part of the renal functional unit.

This handle has an ascending part and a descending part.

In the descending loop, the urine that is formed inside enters a hypotonia, since a large amount of water is absorbed and the concentrations of solutes in the urine decrease, thus generating a hypoosmolar solution, that is, with less molarity.

In the ascending loop of henle, the opposite arises, ionic channels appear that increase the concentration of solutes, this is how the urine that runs through the interior of the ascending loop of henle becomes hyperosmolar.

Hyperosmolarity is the increase in concentrations of solutes, and the increase in molarity of the solution, which in this case would be urine.

Explanation:

A very important fact is that urea is absorbed in the ascending henle loop.

Answer:

The interpretation including its particular topic is demonstrated in the following portion on the interpretation.

Explanation:

Answer:

Types of rocks are three types in :- metamorphic, igneous and sedimentary rocks, these are rocks formed dirt,soil and organic matter.

Explanation:

Sedimentary rocks are is known to plant contain animal fossils, there is a high level of animals and plant they develop layer of rock fuel include oil natural gas.

Sedimentary rock due to the consist addition of new particles by the water and erosion,basins found on to the earth fore arc and back arc basins.

Coal is the type of sedimentary rock that is plant and dead animals or organic matter,long period under time right conditions.

Sedimentary rock is different type carbonate, coal, chemically performed  carbonate rock several kind of chalk and carbonate minerals.

Metamorphic and igneous rocks are abundant and they the most of rocks are on the earth actually are sedimentary rock,an animal and plant refuse one location and settle there soil and organic matter decaying animals.  

Answer:

Organic sedimentary rocks form from decaying plants. Over time, organic matter from decaying plants and animals is pressed together and compacted to rocks.

Explanation:

Answer:

Genetic drift, specifically the Bottleneck effect.

Explanation:

Genetic drift is an evolutionary mechanism in which the allelic frequencies in a population change through many generations. Its effects are harder in a small-sized population, meaning that this effect is inversely proportional to the population size. Genetic drift results in some alleles loss, even those that are beneficial for the population, and the fixation of some other alleles by an increase in their frequencies. The final consequence is to randomly fixate one of the alleles. Low-frequency alleles are the most likely to be lost. Genetic drift results in a loss of genetic variability within a population.  

Genetic drift has important effects on a population when this last one reduces its size dramatically because of a disaster -bottleneck effect- or because of a population split -founder effect-.

The bottleneck effect is a special case of genetic drift, which is most likely to affect smaller populations.  In the exposed example, extensive hunting reduced the number of Northern elephant seals, reducing the number of individuals to fewer than 100. This population experienced one or many generations of very small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population,  the population size might have recovered, but the genetic pool might have not.

Answer:

Myosin

Explanation:

Myosin are the major components of both muscle and non muscle cells in striated muscles which is responsible for contraction or movement that convert chemical energy (ATP) into mechanical work thereby generating force and movement.

During cellular movement , myosin filament will be the ones that are responsible for attaching and pulling the other filaments along because Myosin binds to actin at a binding site on the globular actin protein,it also have ATP binding sites which hydrolyses ADP to ATP , ATP binding causes myosin to release actin, which make actin and myosin to detach from each other thereby causing attachment and contraction of other filaments

Answer:

where there are two different enzymes used to reverse a specific step in a metabolic pathway is the correct answer.

Explanation:

where there are two different enzymes used to reverse a specific step in a metabolic pathway is a process of substrate cycling because its a process that happen between two metabolic pathways or different enzymes ,non equilibrium catalyses reactions which occurs or happen at the same time in opposite directions and having no effect but its deplete energy inform of heat.