BIOLOGY HIGH SCHOOL

Which of the following will occasionally produce a duplicate gene?A) Chromosome replication during mitosis
B) Crossing-over during meiosis
C) Neutral mutation during transcription
D) Genetic drift during reproduction

Answers

Answer 1
Answer: Homologous chromosomes exchange DNA during meiosis in a process called crossing-over. Crossing-over sometimes involves an unequal swapping of DNA. Basically one chromosome in the pair gets extra DNA.
Answer 2
Answer:
b/Crossing-over during meiosis

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Often, the second part of a scientific name is (1 point)

Answers

A. a description of a trait or habitat.

List the five types of white blood cells, and explain how they differ from one another.

Answers

The main types of white blood cells are: Neutrophils and monocytes, which mainly fight against bacteria. Eosinophils and basophils are mainly involved in allergic responses. Lymphocytes, which can be T-cells or B-cells, produce antibodies against foreign organisms and are especially involved in fighting off viruses.

In which form do plants store energy?a. starch
b. glycogen
c. chitin
d. cellulose

Answers

the answer is A. starch
the answer is A.starch

Upon vigorous exercise, your heart rate increases to 200 beats per minute to supply sufficient oxygen to muscles. Which is responsible for this regulation of the heart rate? A. Semilunar valvesB. Sinoatrial node
C. Aorta

Answers

I think the correct answer from the choices listed above is option B. The one that is responsible for the regulation of the heart rate is the sinoatrial node. It is the heart's peacemaker. It is a specialized bundle of neurons which controls the cardiac function. Hope this answers the question.

Answer:

The correct answer would be option B.

Sinoatrial node is also known as heart's pacemaker as it controls the heart rate.

It consists of cluster of cells in upper region of the right atrium. These cells generate electrical signals which are passed onto atrioventricular node.

It is the cluster of cells which is located at the centre of the heart.

It passes and slows down the electric signals to the ventricles.

What is the goal when using a dichotomous key?

Answers

Dichotomous Key -

 - Key used to identify a plant or animal in which each stage presents descriptions of two distinguishing characters, with a direction to another stage in the key, until the species is identified .


   - There you go this should be the correct and explanatory way to explain what your asking HOPE THAT THIS HELPS .

To find the similarities and differences in organisms by using possible chromosome and physical characteristics.

List the eight different systems of the human body:

Answers

The circulatory, immune, skeletal, excretory, muscular, endocrine, digestive, nervous and respiratory.  those are the eight systems of the human body.

Answer:

the other dude did 9- not 8..

Explanation:
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