Activation of muscle contraction could be a speedy event that's initiated by electrical activity within the surface membrane and transversal (T) tubules. This can be followed by unharness of metal<span> from the inner membrane system, the sarcoplasmic reticulum.
</span>Nervous stimulation causes a depolarization<span> of the muscle membrane (sarcolemma) </span>that<span> triggers </span>the discharge<span> of </span>calcium<span> ions from the sarcoplasmic reticulum.</span>
Answer:
The environmental factor that could lead to a decrease in genetic variation in a tuna population is an increase in pollution (second option).
Explanation:
There is a correlation between genetic variability and environmental pollution, the latter being a factor that impacts negatively on the variability of a specific population.
The concept of pollution stress not only implies a low rate of reproduction, but it is also a factor that prevents genetic exchange with other populations, which is a factor that makes the genetic variability decrease in a population.
For these reasons an increase in pollution implies a decrease in genetic variability in a tuna population.
- <em>Other options, such as </em><u><em>an increase in food availability</em></u><em>, a</em><u><em> decrease in tuna fishing
</em></u><em> or </em><u><em>a decrease in tuna predators</em></u><em>, are environmental factors that contribute to increased genetic variability.</em>
In virto fertilization form of assisted reproductive technology.
<h3>IVF: Is the process painful?</h3>
It is comparable to a pap smear or even a vaginal ultrasound appointment. During this technique, an embryo transfer catheter and ultrasound guidance are used to transfer one or more embryos to the uterus. The entire operation will be visible to you on an ultrasound screen. This procedure is painless.
<h3>What distinguishes IVF from in vitro fertilization?</h3>
An IVF procedure involves surgically removing a woman's eggs from her ovaries and fertilizing them in a lab with sperm from a male partner or a sperm donor to produce embryos. (The term "in vitro" refers to the act of fertilizing an egg in a laboratory dish and is derived from the Latin meaning "in glass").
learn more about assisted reproductive technology here
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Fruits with tiny hooks are most likely to be spread by animal hair.
Hope this helps!
I took the same test the answer is A. 1 day
