What is the best source of nuclear DNA when working with hair samples?

Answers

Answer 1

Answer: The answer is a hair root.

Nuclear DNA is commonly extracted from the hair root. The hair root consists of keratinocytes. Keratinocytes are cells found in the epidermis. As all other cells, they contain DNA material. When keratynocites die, they get converted into keratoid material in the process of cornification. As a consequence, dead cells do not contain DNA material. Therefore, the hair root is the best source of nuclear DNA than shed or cut hair when working with hair sample.

Answer 2

Answer:

Answer: follicular tissue

Explanation:

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In which type of reproduction can cells divide through the process of mitosis?

Answers

Mitosis occurs in asexual reproduction. It's counterpart is the meiosis, and both are parts of asexual reproduction.

Answer:

the cells divide through the process of mitosis in asexual reproduction (wont let me put the word bc its inappropriate)

Explanation:

edge 2021

hope this helps <3

Which of the following statements is a hypothesis?A) There are more calories in french fries than in colas.
B) If a student buys a meal plan, he or she will eat more vegetables.
C) Ginny gained 5 lbs her freshman year.
D) I like my biology class better than my other classes.
E) Blake failed the test.

Answers

Answer: B) If a student buys a meal plan, he or she will eat more vegetables.

Explanation:

Hypothesis is a statement(s) which is based on the assumption that is dependent upon the observations made before the research. The statement of the hypothesis can be tested based upon scientific methodology and can be identify as true or false based on the evidences obtain after the results of the experimentation.

B. is the correct option, this is because this can be tested and analyzed based on the identification of type and concentration of vegetables present in the meal.

What is the name of the drug that used to put animals to sleep?

Answers

pentobarbital is the name of the drug

Why have astronomers decided that pluto should be reclassified as a dwarf planet? what happens to most meteors when they enter earth's atmosphere?

Answers

There is a new standard of planets that the IAU set in 2006 and Pluto did not pass it. The new qualification is that a planet must be free of debris around it.

Most meteors are small enough to be burned by friction once it enters the Earth's atmosphere. They are also called 'shooting stars'.

Calcium reabsorption by the kidneys is promoted by the hormone called _______

Answers

parathyroid hormone (PTH)

Which type of white blood cells produces antibodies?A. B-cellsB. T-cellsC. microphagesD. macrophages

Answers

Answer:

The correct answer is B-cells

Explanation:

There are two types of lymphocytes B- lymphocytes and T- lymphocytes. B lymphocytes or B cells when interacts with the antigen with its B cell receptor it differentiates into two cell memory B cells and plasma B cells.

Plasma B cell is responsible for secreting various antibodies and these antibodies bind to the epitope region of antigen and helps in opsonization and killing of antigen. Memory B cell helps in generating quick immune response when that antigen comes again in the body. Therefore the correct answer is B cells.

B cells produce antibodies

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