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2 years ago

What is a feedback mechanism?

Biology

1 answer:

trapecia [35]2 years ago

7 0

<h2>What is a feedback mechanism?</h2>

A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, or commonly known as homeostasis. In nature, feedback mechanisms can be found in a variety of environments and animal types. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.

Examples:

Menstrual cycle. At the beginning of the menstrual cycle, the ovaries release the hormone estrogen. The estrogen acts as a stimulus for the positive feedback loop. ...
Childbirth. Figure: Normal childbirth is driven by a positive feedback loop.

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In hamsters, we can examine the genes for coat color and eye color which are linked:B = brown coat, b = white coat, G = green ey

Inessa [10]

Answer:

10.2 cM

Explanation:

Given,

pure breeding parent 1 : BBgg = brown coat and pink eyes

pure breeding parent 2 : bbGG = white coat and green eyes

BBGG X bbgg = F1 = BbGg ( All are brown with green eyes )

When F1 progeny is test crossed with white coat and pink eyes hamster:

BbGg X BbGg = F2 =

brown, pink eyes = 99 = parental

white, green eyes = 103 = parental

brown, green eyes = 12 = recombinant

white, pink eyes = 11 = recombinant

Recombination frequency =

(total number of recombinants / total progeny ) * 100

= [( 11 + 12 ) / ( 99 + 103 + 12 + 11 )] * 100 = (23/225)*100 = 0.102 * 100 = 10.2 %

1 % recombination frequency = 1 cM distance between genes

Hence, the distance between B and G gene is 10.2 cM

4 0

3 years ago

Help me with this one pls

antoniya [11.8K]

Answer:

i think its the first one sorry if its wrong

Explanation:

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2 years ago

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Alexus [3.1K]

Answer:

Yes it is helpful

Explanation:

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2 years ago

Hydrochloric acid is a strong acid. Acetic acid is a weak acid. Which statement about hydrochloric acid and acetic acid is corre

mixas84 [53]

The correct statement about hydrochloric acid and acetic acid is : ( A )

The pH of a solution of hydrochloric acid must be less than the pH of a solution of acetic acid.

Given that pH is the inverse of concentration of H₃O⁺ ions , The stronger acid ( Hydrochloric acid ) dissociates in solution producing a maximum amount of H₃O⁺ ion, while the weak acid ( acetic ) will disassociate partially in a solution producing a lesser amount of H₃O⁺ ion.

Therefore the pH of a solution of hydrochloric acid must be less than the pH of a solution of acetic acid.

Learn more : brainly.com/question/15533227

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2 years ago

Active transport occurs when molecules are moved across a semi-permeable membrane and

Otrada [13]

the answer would be B (up)

6 0

3 years ago

Read 2 more answers