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4 years ago

What is the composition of a DNA fragment?

Biology

1 answer:

Firlakuza [10]4 years ago

4 0

Answer:

DNA is formed by the union of many deoxyribonucleotides, it is composed of two long chains of polynucleotides, which are kept together due to the interactions of their nitrogenous bases.

Explanation:

DNA is the carrier of genetic information, it can therefore be said that genes are made up of DNA. Nucleotides are the monomeric units of DNA and RNA, also known as nucleic acids, which are responsible for storing and transmitting genetic information from one generation to another. The primary structure of DNA is the deoxyribonucleotide sequence of one of the strands. Genetic information is contained in the exact order of nucleotides

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A researcher is studying a population with a unique age structure. An age-structured histogram he has developed over the course

Rasek [7]

Answer:

The population first grows, stabilizes, and then declines.

Explanation:

A researcher is studying a population with a unique age structure. An age structured histogram he has developed over the course of several decades has undergone transformations in shape, from a pyramid shape to a roughly rectangular shape to an inverted pyramid shape (where the base is narrower than the top). The population first grows, stabilizes, and then declines.

6 0

3 years ago

An energy-rich organic compound needed by organisms is

Rudiy27

The answer is glucose ( number 4)

5 0

3 years ago

List three advantages of managed care organizations

MissTica

managed care organizations are the companies that have agreement with the patients to oversee their health care under minimum cost. there are a several benefits clients get from such arrangements which include
1. lower cost of services offered
2. patients receive care of high quality because each and every care provider must undergo a thorough accreditation process before being allowed to practice managed care
3. the entire process involves cheaper prescription than other practices.

6 0

3 years ago

Read 2 more answers

PLEASE NO LINKS

Annette [7]

Considering the definition of probability, the correct answer is third option: the approximate probability of a moth being brown and yellow respectively is 33% and 21%

Probability is the greater or lesser possibility of a certain event occurring.

In other words, probability establishes a relationship between the number of favorable events and the total number of possible events.

Then, the probability of any event A is defined as the quotient between the number of favorable cases (number of cases in which event A may or may not occur) and the total number of possible cases. This is called Laplace's Law.

$P(A)=\frac{number of favorable cases}{total number of possible cases}$

In this case, you know that in a moth population, 48 are brown, 30 are yellow, and 67 are black. So, the total number of possible cases is calculated as:

total number of possible cases= 48 + 30 + 67= 145

The number of favorable cases for a moth to be brown is: 48

Then the probability that a moth is brown is calculated as:

$P(A)=\frac{48}{145}$ = 0.33= 33%

On the other side, the number of favorable cases for a moth to be yellow is: 30

Then the probability that a moth is yellow is calculated as:

$P(A)=\frac{30}{145}$ = 0.21= 21%

In summary, the correct answer is third option: the approximate probability of a moth being brown and yellow respectively is 33% and 21%

Learn more about probability:

brainly.com/question/23297275?referrer=searchResults

5 0

2 years ago

Why do tumor cells need blood vessels to continue to grow

melomori [17]

Answer:

Like healthy cells, cancer cells cannot live without oxygen and nutrients. So they send out signals, called androgenic factors, that encourage new blood vessels to grow into the tumor. This is called parthenogenesis. Without a blood supply, a tumor can't grow much bigger than a pin head.

Explanation:

3 0

3 years ago