HELPPP! i’m so confused and i need to get a good grade

Answer:

4 quadrants are created to pick up or isolate pure colonies of microbes.

Answer:

3 long whiskers: 1 short whiskers

Explanation:

This question involves a single gene coding for whiskers length in a certain animal. The allele for long whiskers (W) is dominant over the allele for short whiskers (w). This means that a heterozygous individual (Ww) will possess a long whisker.

According to this question, a heterozygous female with long whiskers (Ww) mates with a heterozygous male with long whiskers (Ww). The proportion of offsprings that will be produced from this cross (see punnet square) is as follows:

WW, Ww, Ww, ww

WW, Ww, Ww offsprings will possess a long whisker while 'ww' offspring will possess a short whisker. Hence, the phenotypic ratio will be 3 long whiskers: 1 short whiskers

Yeasts change from mitotic to meiotic division when conditions are unfavorable because meiosis increases genetic diversity and improves their chances of survival in unfavorable conditions.

During meiosis, crossing over of genetic materials between non-homologous chromosomes creates genetic recombination and makes the resulting offspring to be genetically more diverse than their parents.

The increased genetic diversity will increase the chances of survival of the offspring in a constantly changing environment. In other words, the more genetically diverse a population is, the more their chances of surviving adverse environmental conditions.

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Answer:

Natural selection is a factor of biological evolution, by means of which individuals who possess a certain characteristic tend to prevail over those who lack such characteristic. Thus, by reproducing, individuals with favorable characteristics end up imposing their own set of characteristics, taking control of the environment in which they develop and relegating other individuals or condemning them to their extinction or displacement.

Thus, in the case, if some mice entered the environment of others, most likely they would not be able to adapt to the conditions to which the original group of that environment had previously adapted. In this way, natural selection itself would make the new mice end up disappearing from it, in favor of the mice that already lived there and that, therefore, had adapted their characteristics to those of the environment.

Answer:

I believe that A Wood is correct

Intensive agriculture is resulting in the loss of ecosystem and is contributing to global warming.  

• An agricultural mechanization and intensification system, whose main objective is to increase the productivity from the accessible land via several means like heavy use of chemical fertilizers and pesticides is known as intensive agriculture.  

• The intensive agriculture is generally aimed to feed large population of humans, however, the method has contributed as one of the biggest threat to global environment, as it is resulting in the loss of ecosystem and global warming.  

• It is accountable for the 80 percent of the tropical deforestation and emergence of novel parasites and reemergence of the parasites, which were under control at one time.  

• The intensive farming hampers the beneficial plants and insects, and depletes and degrades the soil it relies upon.  

• It is resulting in soil erosion and is resulting in the genetic erosion of the livestock species and crops around the globe.  

Thus, intensive farming in order to feed large populations is eradicating the world agriculture slowly and gradually.

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Answer:

1) option a is correct. (260+270)/1545

(Note about this option: In the statement, it is written as (260+270) 1545. Lacks the division symbol, / )

2) From these results one can conclude that the two genes are linked (option a)

Explanation:

To know if two genes are linked, we must observe the progeny distribution. If heterozygous individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. If we observe a different distribution, phenotypes appearing in different proportions, we can assume linked genes in the double heterozygote parent.  

We might verify which are the recombinant gametes produced by the di-hybrid, and we will be able to recognize them by looking at the phenotypes with lower frequencies in the progeny. Phenotypes with the highest frequencies represent the parental gametes.

To calculate the recombination frequency, we will use the following formula: P = Recombinant number / Total of individuals.  

In the present example:

Parental)        YySs                        x                 yyss

Gametes)  YS parental type                        ys, ys, ys, ys

                 ys parental type

                 Ys recombinant type

                 yS recombinante type

The total number of individuals in the offspring: 1545

Phenotypic class Number of offspring  

According to this information, the phenotypic frequencies of the progeny differ from the phenotypic ratio 1:1:1:1. We can assume then, that these genes are linked.

The recombination frequency is:

P = Recombinant number / Total of individuals

P = 260 + 270 / 1545

P = 530/1545

P = 0.343

The genetic distance between genes is 0.343 x 100= 34.4 MU.

Answer: herbaceous plants are plants with very flexible stems. Their leaves and stems die down to soil level at the end of every growing season amd woody plants are plants with very strong and not easily bendable stems such as trees. Woody plants produce wood as a structural tissue

Answer:

true .......... hopefully

Answer:

False

Explanation:

Humans have technology and alot of other stuff while plants are only have natural resources

Answer:

Explanation:

I would say A. Learning to ride a bicycle is a process of getting on and falling off. You have no idea how to do it properly without practice. That's learned.

But look out for D. I'm not sure that that isn't instinctive. Somewhere along the line I think even a baby knows not to let his/her eyes be touched. Is it learned? It's close but A is a much better answer.

The salmon is instinctive. The plant doesn't learn to turn towards the sun. It does so because more food is produced.

Yes, it's A.

A is the only option that is not instinctual. Riding a bicycle is something that has to be taught (and even if you weren't taught to ride a bike, you had to figure it out by trial and error.)

The other options are instinctual and reflexive responses. The salmon returning to the river is a behavior that is pretty much hard-wired into the salmon's brain. The plant turns to follow the sun because it is a source of light and energy.

The other user expressed uncertainty as to option D, but in fact, option D is very much a reflexive, instinctual response as well. To flinch or blink when something abruptly moves towards you is not a choice or something you have to be taught — it's a reflex, something you can't control.

Answer:Measles is a highly contagious virus that lives in the nose and throat mucus of an infected person. It can spread to others through coughing and sneezing. If other people breathe the contaminated air or touch the infected surface, then touch their eyes, noses, or mouths, they can become infected.Measles is caused by a virus in the paramyxovirus family and it is normally passed through direct contact and through the air. The virus infects the respiratory tract, then spreads throughout the body. Measles is a human disease and is not known to occur in animals.

It usually begins as flat red spots that appear on the face at the hairline and spread downward to the neck, trunk, arms, legs, and feet. Small raised bumps may also appear on top of the flat red spots. The spots may become joined together as they spread from the head to the rest of the body.

Explanation:

Answer: GoodMorning: ) ✨ Measles is a highly contagious virus that lives in the nose and throat mucus of an infected person. It can spread to others through coughing and sneezing. If other people breathe the contaminated air or touch the infected surface, then touch their eyes, noses, or mouths, they can become infected.Measles is caused by a virus in the paramyxovirus family and it is normally passed through direct contact and through the air. The virus infects the respiratory tract, then spreads throughout the body. Measles is a human disease and is not known to occur in animals.

It usually begins as flat red spots that appear on the face at the hairline and spread downward to the neck, trunk, arms, legs, and feet. Small raised bumps may also appear on top of the flat red spots. The spots may become joined together as they spread from the head to the rest of the body.

Have a Nice Day/Night <3 .

Answer:

Insulin is composed of an A chain of 21 amino acids and a B chain of 30 amino acids. C-peptide is a peptide composed of 31 amino acids

Explanation:

Insulin is composed of an A chain of 21 amino acids and a B chain of 30 amino acids, the chains being held together by two disulfide bonds. A third disulfide bond is present within the A chain. Human insulin differs from porcine insulin by a single amino acid and from beef insulin by three amino acids.

Explanation:

Dashed circles around either an R or K indicate sites of peptidase cleavage that result in generation of the mature insulin that is comprised by two separate peptides: the A chain with 21 and the B chain with 30 amino acids. A third C peptide with 21 amino acids served as a linker between the A and B chains.

Answer:

leopard gecko

Explanation:

Answer:

you chose based off what i type

Explanation:

crested geckos need a vivarium and a uvb light but turn it off at night cause they are nocturnal they need stuff to climb on a hide and a clean cage the eat a powder mixed with water and crickets you can give them other bugs to they can jump from your hand to your arm if they want to they will drop there tail if scared they do not grow back also super cute

leopard geckos need a 20 gallon or bigger terrarium with uvb to turn off at night and a heat pad 24\7 make sure its no to hot leopard geckos need a variety of bugs like crickets and bubia roaches and other  and a clean tank and at least 2 hides they will drop there tail but they do grow back they just look a little different but are super cute

Lyell and Malthus influenced Darwin as he developed his ideas about evolution

Darwin believed there would have been plenty of time for evolution to occur. Darwin didn’t develop his theory completely on his own. He was influenced by the ideas of earlier thinkers.

Some of the early thinkers include Jean Baptiste Lamarck (idea of the inheritance of acquired characteristics), Charles Lyell ( Principles of Geology), Thomas Malthus (on population).

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Answer:

In the interphase

Explanation:

Answer:

By increasing the enzyme concentration, the maximum reaction rate greatly increases. Conclusions: The rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction.

Answer: Helper T cells, or Th cells, coordinate immune responses by communicating with other cells. In most cases, T cells only recognize an antigen if it is carried on the surface of a cell by one of the body's own MHC, or major histocompatibility complex, molecules.

Explanation:

Answer:

T cells identify pathogens based on antigens on the surface of pathogens. The T cells then multiply and stimulate B cells to produce antibodies. The antibodies attach to the antigens, making the pathogens a target for phagocytes.

Explanation: sample response

HI

Answer:

The water vascular system of echinoderms (B) functions in locomotion and feeding.

Which of the following combinations of phylum and description is correct?   (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity

Explanation:

Echinoderms are marine animals. They have a water vascular system that make them able to move (locomation), respiration and food and waste transportation. This system is full of different canal along the body.  

Echinodermata has not a radial symmetry as a larva, in fact it has a bilateral symmetry and coelom present. When it comes to Nematoda, they are roundworms and have a pseudocoelomate. Finally, porifera has a gastrovascular cavity and no coelom.

V

Explanation:

1. F

2.T

3.T

4.F

5.F

6.T

7.T

Answer:

A. Compound Light Microscope

Explanation:

USA TestPrep

Answer:

coumpound light microscope

Explanation:

Answer:

cytosine

Explanation:

Guanine is one of the building blocks of DNA. It's the G in the A, C, G, or T. Guanine in the double helix pairs with cytosine, so you will see CG pairs; one on one strand and one on the other.

Answer:

In a DNA molecule, G pairs with C

Explanation:

Wish you luck! Have a good day~

Answer:

The correct answer is :

1. increase in cholesterol level leads to more death due to cardiac disease.

2. Hypothesis: "if the cholesterol level is high in an individual, then the risk of death due to cardiac disease is high"

3. Everyone should limit or control their cholesterol level to avoid cardiac disease or it might be lethal.

Explanation:

In this graph, it is represented that there is an increase in the deaths due to cardiac disease with the increase in the cholesterol in the body. The death increase slowly up to 2.5 gL and after that, there is a huge spike in death, which explains that the higher the cholesterol level higher the chances or risk of death due to cardiac disease.

Hypothesis: "if the cholesterol level is high in an individual, then the risk of death due to cardiac disease is high"

On the basis of this one should control its body cholesterol to avoid the chances of cardiac disease as it may lead to death.

Answer: The passing on of traits and physical features from parents to children.

Explanation:

Hope this helps! Have a good day! :)

Answer:

Shrink

Explanation:

The blood cell would shrink because of osmosis. The molecules move with the concentration gradient so water molecules will move outside of the cell where there is less water than inside of the cell.

Blood cells are the main constituents of the circulatory system and carry the most vital function of oxygen transportation. Blood cells have a specific concentration and osmotic pressure to remain vital.

The correct answer is:

Option D. Shrink.

This can be explained as:

Therefore when the red blood cells are placed in 0.8% salt solution they will shrink.

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Answer: if its anasexual its 75%-100 if its a sexual its at a minimum of 50-25%

Explanation:

Explanation:

perform the following the rhythm patterns using the given legend use any kind of membranophones pearl shoes us