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kari74 [83]
3 years ago
13

Which of the following is a possible ancestor to modern humans? a. Australopithecine Afarensis b. Australopithecine Robustus c.

Neanderthals d. Apes and Chimpanzees
Biology
2 answers:
BARSIC [14]3 years ago
7 0
According to science, D would be the correct answer. Hope this helps!
KATRIN_1 [288]3 years ago
5 0

Answer:

a. Australopithecine Afarensis

Explanation:

With a skull of 3 million years, scientists have been able to prove the existence of Australopithecus afarensis, the oldest ancestor of humanity. 4 million years ago, humanity did not exist. But at least one creature bore in its bones what would be the hallmark of Homo sapiens. Australopithecus afarensis, that creature's name, had a tiny brain. But it stood like no monkey could do, representing an ancestral trait that would be passed from generation to generation to modern man.

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MAXImum [283]

Answer:

The correct answer is the endocrine system.

Explanation:

The sympathetic division of the autonomic nervous system and the endocrine system are the two prime systems that take part in the stress response.  

At the time of acute or chronic stress, the endocrine system first makes the hypothalamus to discharge CRH or corticotropin-releasing hormone into the bloodstream. The release of CRH further makes the anterior pituitary to discharge ACTH or adrenocorticotropic hormone into the blood. This further stimulates the adrenal cortex to discharge cortisol, that is, one of the glucocorticoid hormone into the bloodstream.  

The cortisol finally makes the organs and tissues present within the body to effectively cope up with the initial stress stimulus.  

6 0
3 years ago
Buffalo have a somatic chromosome number of 60. Hybrids produced by crossing a buffalo and grizzly bear are called gruffalo, are
Keith_Richards [23]

Answer:

37

Explanation:

Since the Gruffalo has a somatic chromosome number of 67 and the Buffalo has a somatic chromosome number of 60, we may infer that seven chromosomes from the Grizzly were not able to pair up with the chromosomes of the Buffalo. Checking the options, the only choice that has a suitable number is b. 37 chromosomes. If this is true, then the remaining 30 chromosomes were able to pair up.

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3 years ago
Which of the following would occur if cells did not have enzymes?
Alex17521 [72]
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3 0
3 years ago
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4 years ago
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katrin2010 [14]

Answer:

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Similarly, Maltese dogs were selectively bred in order to attain characters like the small size, less shedding of hairs et cetera.

4 0
4 years ago
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