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zlopas [31]
3 years ago
11

In humans, oculocutaneous (OCA) albinism is a collection of autosomal recessive disorders characterized by an absence of the pig

ment melanin in skin, hair, and eyes. That is, normal pigmentation (A) is dominant over albino characteristics (a). For this question, assume it is a single gene with two alleles. If both parents display the albino phenotype, what are all of the possible genotypes that may be observed in their offspring?
Biology
2 answers:
Natasha_Volkova [10]3 years ago
4 0

Answer 1:2:1

Explanation:1AA:2Aa:1aa using punnette square

alex41 [277]3 years ago
3 0

Answer:

1:2:1

Explanation:

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Which of these conditions indicate positive feedback has occurred?
aleksklad [387]

Answer;

A) Blood pressure decreases greatly; blood flow to the heart is inadequate, and blood pressure decreases.

Explanation;

-With negative feedback, the output reduces the original effect of the stimulus. While in a positive feedback system, the output enhances the original stimulus.

-Negative feedback is the most commonly used feedback loop in the body. Negative feedback is used to negate or counteract a stimulus without completely eradicating it.

-One key difference between the two feedback is that positive feedback loops are used to eradicate a stimulus. Another key difference is that responses through positive feedback become more amplified over time. So once a stimulus activates a positive feedback loop it is not turned off until the stimulus is completely removed.

8 0
3 years ago
An echocardiogram reveals Charles, an ultramarathon runner, has an enlarged left ventricle. As this increase in ventricular size
astra-53 [7]

Answer:

The correct answer would be - physiological hypertrophy.

Explanation:

Physiological hypertrophy of is a condition of the heart that occurs in return of the normal growth an individual such as an athlete like Charles who is a marathon runner in this case.

Left ventricle hypertrophy is a common type of hypertrophy that occurs in this condition in which the left ventricle of the heart increase in size temporary which arises in response to the exercise and function is done by muscles.

thus, the correct answer is - physiological hypertrophy.

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3 years ago
Plants take in and release oxygen gas.
skad [1K]
Plants take in carbon dioxide and release oxygen 
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2 years ago
Which organelle forms the surface of a cell separating its content from the outside world?
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cell membrane forms the surface of a cell to protect it from the outside world.

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