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yaroslaw [1]
3 years ago
15

Hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Biology
2 answers:
Usimov [2.4K]3 years ago
6 0

Answer:

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Explanation:

Firlakuza [10]3 years ago
4 0

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Because the human embryo is able to split during early cleavage or blastocyst formation to produce two viable progeny, it is sai
juin [17]

Answer:

This question lacks options, options are:

a) indirect

b) mosaic

c) determinative

d) regulative

e) direct.  

The correct answer is d.

Explanation:

The egg (ovum) like the embryo during the first embryonic divisions, do not possess any sign of polarity. This development mechanism can be called regulative development(in contrast to the mosaic model) since the fate of the cells that originate is not fixed and can be modified during development. In regulative embryos, part of the embryo can be removed and the remaining cells can compensate for the loss and give a complete individual as the final product.The strongest evidence that continues to support this regulatory model is based on the plasticity or potential that mammalian cells possess before implantation. It is known that the blastomeres produced by the first divisions can be replaced with each other or even can be eliminated without apparently altering the embryonic development and therefore they are equivalent (without polarity).

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2 years ago
What factors contribute to past and present changes in California's sea otter population?
ra1l [238]

Answer:

White shark bites, parasites, food availability, habitat degradation are among some of the contributing factors threatening the recovery of the species. The greatest threat to a sea otter is the oil spills.

Hope this helps!

Extra - Fun fact - Sea otters play a vital role in the health and stability of the nearshore marine ecosystem as a keystone species.

6 0
3 years ago
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In the disease osteoporosis there is a significant loss of spongy bone. explain how the loss of this specific bone material can
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Spongy bone has trabecular which serve as reinforcing plates against a force. The loss of spongy bones causes weakening of the internal support that the compact bone requires and the entire bone breaks.

6 0
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kumpel [21]

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Explanation:

3 0
3 years ago
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Which of the following is an example of a self-care skill kindergarteners should be able to do?
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Dress themselves because like that they are taking care of their physical body and keeping it nice and healthy
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