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vlabodo [156]
3 years ago
10

What motion moves food down the esophagus to the stomach

Biology
1 answer:
nekit [7.7K]3 years ago
8 0
Peristalsis<span> is a radically symmetrical </span><span> contraction and relaxation of muscles</span><span> that propagates in a wave</span><span> down a tube, in an anterograde direction.</span>
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Why is the ability to culture stem cells important
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The ability to culture stem cells<span> has </span>important <span>implications, as they contain all of the genetic material needed for the formation of every </span>cell<span> type within the body.   :)</span>
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The following chain represents how energy flows through ecosystems:
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Many plants and animals would die off <span>if a nearby volcano erupted and filled the sky with dust particles, which caused significantly less sunlight to reach the ecosystem over the course of a year.</span>
4 0
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Does peterson's solution to the mutual-exclusion problem shown in fig. 2-24 work when process scheduling is preemptive
Sloan [31]
<span>Yes. Not only does Peterson's Solution work with preemptive scheduling, but it was designed for that very case. In fact, when scheduling is non-preemptive, there is a possibility it might fail. For example, in a case where 'turn' is initially 0, but process 1 runs first, it will loop perpetually, and never release the CPU.</span>
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3 years ago
Red-green color blindness in humans is inherited as an X-linked recessive trait. Usually, heterozygous females are not colorblin
Maksim231197 [3]

Answer:

The mentioned characteristics of variability are witnessed because of the phenomenon known as X chromosome inactivation in heterozygous females. As females possess two X chromosomes, they actually should not possess any color blindness.  

The phenomenon of X-chromosome inactivation takes place in a random manner at the time of embryo development. During this only one X chromosome is inactivated. If the chromosome comprising the defective gene is inactivated, the individual will possess normal vision.  

If the chromosome comprising the usual gene gets inactivated than the individual will be color blind. In the given case of female, X inactivation took place in one eye. The inactivation of normal alleles has taken place and thus she possesses normal vision with one eye and is color blind in the other eye.  

6 0
3 years ago
A horticulturalist wants to produce geraniums with specific characteristics. She knows that the trait of red flowers is governed
likoan [24]
<span>The answer is  A -The red geranium is heterozygous for red flowers (Rr).

We know that the red flower, to be red needs to have at least a dominant allele, so it could be either Rr or RR.
Let's try both scenarios.
If the white</span><span> geranium (rr) is being crossed with RR, all the offspring would be red with genotype: Rr.
On the other hand, if the flower is Rr and it's being crossed with rr, that would result in </span><span>half of the new generation plants having red flowers and the other half white flowers.</span>
5 0
3 years ago
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