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Ad libitum [116K]
3 years ago
14

Which of the following statements concerning viruses is true? View Available Hint(s) Which of the following statements concernin

g viruses is true? Viruses are usually about the same size as bacteria. Viruses contain both DNA and RNA, and they undergo binary fusion. Viruses possess enzymes for protein synthesis and ATP generation.
Biology
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

The correct answer is "The "host range" for a virus is determined by the presence or absence of particular components on the surface of a host cell that are required for the virus to attach".

Explanation:

The missing option of this question is the one that is correct, which is "The "host range" for a virus is determined by the presence or absence of particular components on the surface of a host cell that are required for the virus to attach". A virus is able to infect by recognizing particular components that are present in the surface of the host cell. If this components are absent in the cell, the virus is not able to infect it. Therefore, the "host range" is determined by the presence or absence of this particular components.

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A couple in Indiana are each heterozygous for the autosomal recessive allele for albinism. They have two children. What is the p
irinina [24]

Answer:

Probability that both children will be phenotypically identical with regards to skin color is 10/16.

Explanation:

The couple has a heterozygous genotype for the recessive allele. Representing the recessive allele with 'a' and the dominant allele with 'A', we can write the heterozygous genotype for the couple as Aa.

The gene pool of the children for this couple can be represented as:

Alleles       A        a

A              AA       Aa

a               Aa       aa

There can result 4 combinations of alleles AA,Aa,Aa and aa. The recessive allele is responsible for albinism so the child with the allele set 'aa' will have albinism while the others, AA,Aa and Aa will show no signs of albinism since the recessive allele is responsible for it.

The probability that both children will be phenotypically identical can be calculated by first considering that the children show albinism and then consider the probability that they have a normal phenotype.

Probability that a child will have albinism (aa) = 1/4

Probability that a child will not have albinism (AA, Aa and Aa) = 3/4

Probability that both children have albinism = 1/4 x 1/4 = 1/16

Probability that both children will have no albinism = 3/4 x 3/4 = 9/16

Probability that both children will be phenotypically identical = 1/16 + 9/16

                                                                                                      = 10/16

Probability that both children will be phenotypically identical with regards to skin color is 10/16.

4 0
3 years ago
What did raymond cattell call the underlying traits that direct surface traits?
cluponka [151]
To answer that question I would say A. source trait
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What is relay neuron?
kotegsom [21]

Answer:

Relay neurons are found between sensory input and motor output/response. Relay neurons are found in the brain and spinal cord and allow sensory and motor neurons to communicate. Motor neurons are found in the central nervous system (CNS) and control muscle movements.

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Transport of a material from the lumen (cavity) of an organ into one side of a cell and out the other side of the cell into the
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Transcellular transport & absorption
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What physical property distinguishes elements on the left side of the
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Answer : states of mmmatter... This is because elements at the right are majorly non metal and are liquid or gas at room temperature while those at the left are metal and mostly solid at room temperature

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