BIOLOGY HIGH SCHOOL

A population contains short plants and tall plants . The short plants are not able to compete with tall plants for sunlight . The tall plants , however , are more susceptible to wind damage . Which type of selection are the plants experiencing ?

Answers

Answer 1
Answer: Stabilization Selection

In Stabilization Selection there is a decrease in the amount of variation. In the case of Stabilization Selection, selective pressures must select against two extremes of a particular trait. Two opposing selection pressures will combine to maintain a median height. Rather than resulting in extremely tall plants or extremely short plants, the majority of the plants in this population will be of medium height.
Answer 2
Answer:

In Stabilization Selection there is a decrease in the amount of variation. In the case of Stabilization Selection, selective pressures must select against two extremes of a particular trait. Two opposing selection pressures will combine to maintain a median height. Rather than resulting in extremely tall plants or extremely short plants, the majority of the plants in this population will be of medium height.

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Two DNA fragments are separated by gel electrophoresis. Check all of the statements that are true of the DNA fragment that traveled less far in the gel1. The DNA fragment has a higher molecular weight.
2. The DNA fragment has a lower molecular weight.
3. The DNA fragment has a higher positive charge.
4. The DNA fragment has a higher negative charge.

Answers

Explanation:

Boom, here are the correct answers:

- 1. The DNA fragment has a higher molecular weight. (heavier molecules move slower through the gel)

- 3. The DNA fragment has a higher positive charge. (more charge = more interaction with the electrical field)

- 4. The DNA fragment has a higher negative charge. (again, more charge = slower movement)

- 2 is FALSE! Lower molecular weight DNA fragments move faster through the gel, so the fragment that traveled less far in the gel actually has a higher molecular weight.

Final answer:

The DNA fragment that traveled less far has a higher molecular weight.

Explanation:

The DNA fragment that traveled less far in the gel has a higher molecular weight. Gel electrophoresis separates DNA fragments based on their size, with larger fragments traveling a shorter distance. Therefore, option 1 is correct.

Learn more about Gel Electrophoresis here:

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Why might a blood cell have a different shape than a muscle cell

Answers

Blood cells carry oxygen to the rest of the cells in the body, and hemoglobin can help it do so. But in order for the hemoglobin to be effective enough, the blood cell has to be a certain kind of shape.

Choices made by people and nations impact and shape American History.Which statement about Reconstruction supports this enduring understanding?

A. Reconstruction legislation changed American attitudes regarding race and ended discrimination in society.
B. Reconstruction policies brought Americans with opposing viewpoints together and resolved sectional differences in society.
C. Reconstruction produced three Constitutional amendments that have influenced American society to the present day.
D. The success of Reconstruction showed that the president and Congress can work together in reaching a compromise.

Answers

I think the correct answer from the choices listed above is option C. Reconstruction produced three Constitutional amendments that have influenced American society to the present day. One of the amendments was to remove slavery. Hope this answers the question.

Answer:

The correct answer is option C. "Reconstruction produced three Constitutional amendments that have influenced American society to the present day".

Explanation:

The Reconstruction era was a significant period of American History, particularly for the development of Human Rights. During this era the Thirteenth, Fourteenth, and Fifteenth amendments were adopted to the United States Constitution. This amendments abolished slavery, allowed that all citizens could vote and granted citizenship to persons born or naturalized in United States. The influence that these amendments had in the following years of American History is an example of how choices made by people and nations impact history.

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Answers

Intracellular digestion takes place in animals without a digestive tract, in which food items are brought into the cell for digestion. Extracellular digestion is a process in which animals feed by secreting enzymes through the cell membrane onto the food.

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Answers

The term for this is an hernia.
The answer of this is an Hernia

Which component of a virus is injected into an infected cell? tail section nucleic acid protein capsid mitochondrion

Answers

The correct answer to the question above is nucleic acid. The component of a virus, nucleic acid, is injected into an infected cell. All viruses contain a nucleic acid, which also carries its deoxyribonucleic acid and ribonucleic acid. 

NUCLEIC ACID you welcome
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