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Julli [10]
3 years ago
15

If two individuals from different species attempt to mate, but fertilization fails to occur, this is likely the result of_____.

However, if such a mating produces a zygote that fails to form a viable embryo, this is likely the result of_____.
a. pre-zygotic factors; post-zygotic factors.
b. post-zygotic factors; pre-zygotic factors.
c. behavioral factors; pre-zygotic factors.
d. pre-zygotic factors; behavioral factors.
e. post-zygotic factors; lock-and-key factors.
Biology
1 answer:
Triss [41]3 years ago
5 0

Answer:

<h2>Pre-zygotic factors; post-zygotic factors </h2>

Explanation:

Fertilization is the process of fusion of  male gamete (sperm) and female gamete (egg). Before fertilization, all the events are known as pre-fertilization events and those which occurs after fertilization are known as post-fertilization events.

There are various factors which help in fertilization. All species contain some receptors on the membrane of egg which play very important role in fertilization and prevent fertilization between inter-species.

The mating in which the formation of zygote is occurs but it is unable to form a viable embryo,  is due to the result of post-zygotic factors.

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The BRCA gene is a tumor-suppressor gene found in the breast; to be more specific, it produces proteins that suppress cancerous activities/abnormal growth in the body. A mutation in a BRCA gene would allow these abnormal growth activities to go unchecked and thus increase the rate of mitosis. Cell cycle checkpoints would significantly be worse at their jobs of checking and correcting for errors during the cell cycle. Tumors would result as well, as cancerous growth continues, and the tumor can become metastatic.

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What do the “nodes” in a cladogram represent?
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3 years ago
What part of the spinal cord represents an increase in cell body mass for upper limb control?
alexdok [17]

Answer: a. cervical enlargement.

Explanation:

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4 0
3 years ago
Read 2 more answers
Type the correct answer in the box. Spell all words correctly.
Arturiano [62]

The nitrogen cycle is completed with the process of Denitrification

<h3><u>Explanation:</u></h3>

Denitrification finishes the nitrogen cycle by transforming nitrate behind to vaporous nitrogen. Denitrifying bacteria are the doers of this method. These bacteria utilize nitrate alternately of oxygen while gaining energy, delivering nitrogen gas into the environment.

Denitrification relies on microbial action to crumble freely nitrogen-containing components. Bacilli absorb nitrate to generate energy, but in the method, denitrification transpires and nitrogen is diminished.   Denitrification is an anaerobic means, transpiring chiefly in soils and deposits and anoxic zones in ponds and shores.

5 0
3 years ago
The nurse is caring for a 10-year-old child who weighs 82.2 lb (37.3 kg) and is to receive 2.5 ml/kg/hr of 0.45% nacl solution.
Vitek1552 [10]

Answer:

The correct answer would be 93 milliliters.

The same can be explained with the help of the unitary method.

The volume of solution required for 1 kg of weight in one hour = 2.5 milliliters (given in the question).

Thus, the volume of the solution required for 37.3 kg of weight in one hour = 2.5\times37.3 milliliters

It comes out be 93.25 milliliters.

Thus, around 93 milliliters of the solution should be given to the child of weight 37.3 kg in one hour.

6 0
3 years ago
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