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3 years ago

You can be infected with a virus and not even know it. a. true b. false

Biology

2 answers:

lidiya [134]3 years ago

6 0

Answer:

TRUE

Explanation:

Ksju [112]3 years ago

3 0

It is absolutely true that you can be infected by a virus and not even know it. Some of the known viruses can remain dormant for a long time. During this phase it is not possible for a human being to know that the virus has already entered the body. It is sometimes also called the gestation period. When the virus comes out of this dormant period, then only it is possible for the human beings to know that they have been attacked by a virus. Sometimes this late discovery can be very fatal and even lead to death. This dormant form of virus is very difficult to initially understand.

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Explain how humans have fewer bones as adults then as babies?

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5. If there is a large number of prey rodents, the number of owls will increase due to a healthy

Elena-2011 [213]

Answer:

Yes

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4 years ago

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Paul [167]

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2 years ago

In humans, Rh+ blood is dominant to Rh–. A man and woman are both Rh+, but their first child is Rh–.

shusha [124]

Answer:

a) There is a 25% chance that their next child will be Rh-.

b) There is a 3/8 chance for a Rh+ girl

Explanation:

As we know from the question that Rh is a dominant gene. A person having only one allele for the gene will show its effect as it is the dominant character.

This means that for a person to lack the Rh factor, it shall not have any allele with the Rh factor.

To illustrate the result, lets draw a punnet square:

Rh+ Rh-

Rh+ Rh+/Rh+ Rh+/Rh-

Rh- Rh+/Rh- Rh-/Rh-

For the probability for it to be a girl, we know that there are 50-50 chances for the next baby to be a boy or a girl. The chance of being Rh+ are 75% for the next baby.

Hence,

3/4 multiplied by 1/2 is 3/8 ,which is the chance for the next baby to be a girl with Rh+ factor.

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3 years ago