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Alekssandra [29.7K]
3 years ago
12

A one-way relationship in which one species benefits and directly hurts the other is called

Biology
1 answer:
vampirchik [111]3 years ago
7 0
That type of relationship is known as Parasitism
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What are two possible factors that contribute to this country having the most deaths? Which country has the highest percentage o
Nataliya [291]

Answer:

Population density and transportation, Switzerland (technically), Africa

Explanation:

population density means of the population is close together and as such it can spread easier. Modern transportation I.E. buses, planes, railroads can transport large numbers of infected people to several different places within a nation and lead to more cases Switzerland is the highest per capita it has 1340 confirm cases per 1 million people however that's likely because they are able to test a large amount of the population at once whereas a larger Nations such as the u.s. or China is unable to test all their population at once and get accurate results. Africa is least affected due to not having a lot of population some together with the exception of some major cities and more industrialized countries such as Egypt and also Lacking the modern transportation systems available in more industrialized nations they don't have as many trains they don't really have too many planes able to transport infected people everywhere

6 0
3 years ago
Read 2 more answers
PLS ANSWER DUE LATER!!
goldfiish [28.3K]
You can probably find these answers on quizlet
5 0
3 years ago
Duchenne muscular dystrophy is an X-linked recessive disease. A phenotypically normal couple wants to start a family. The woman’
Andreyy89

Answer:

\frac{1}{8}

Explanation:

From the question: Duchenne muscular dystrophy is an X-linked recessive disease.

Now for an X-linked recessive disorder to be affected by a male individual; it only requires the presence of only one copy of the recessive allele of the disease to be present BUT in a female individual. both copies of the recessive allele must be present.

Let the X-linked recessive disease(i.e Duchenne muscular dystrophy) be = (ⁿ)

However, we are told that the couples are normal and are unaffected. Therefore;

the male partner (XY) will be:   X^NY

the female partner (XY) will be: X^NX^N

Similarly, the question proceeds by telling us that: the woman's brother has the disease.

Definitely, it's possible that this unaffected woman is a carrier of the disease.

So, if she is a carrier; we have her traits to be: X^NX^n

NOW, if a cross exist between these couples; we have

X^NY     ×        X^NX^n

                     X^N                         Y

X^N                X^NX^N                  X^NY

X^n                 X^NX^n                   X^nY

So, we have offspring as follows:

X^NX^N  = normal unaffected female  

X^NY     = normal unaffected male

X^NX^n   = female carrier for the Duchenne muscular dystrophy disease

X^nY      = affected male with the Duchenne muscular dystrophy disease

So, the probability of the child to be affected with the disease = \frac{1}{4}

Also, the probability that the first child will be a male or a female = \frac{1}{2}

∴

the  probability that the couple’s first child will be affected = \frac{1}{4}*\frac{1}{2}

=\frac{1}{8}

4 0
3 years ago
The part of the limbic system that produces hormones is the
Elena-2011 [213]
The answer you are looking for is the <span>hypothalamus</span>
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2 years ago
The most common source of infectious diseases in water supplies is _______. a. algal blooms b. sewage c. surface runoff d. none
olya-2409 [2.1K]
None of the above...
3 0
3 years ago
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