4 years ago

The bacterium Bacillus anthracis, which causes anthrax, has been developed as a biological warfare agent.

1 answer:

Elena-2011 [213]4 years ago

8 0

This statement above is TRUE.
Anthrax is an infection that is caused by the bacteria Bacillus anthracis. The infection is spread by contact with the spores of the bacteria. The bacteria affect the respiratory system and cause the lungs to collapse leading to death.
Some countries have developed anthrax as a weapon of war.

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When crossing-over takes place, chromosomes

sesenic [268]

I think the correct answer from the choices listed above is option A. When crossing-over takes place, chromosomes exchange corresponding segments of DNA. Corresponding genes on non-sister chromatids are exchanged at chiasmata. Hope this answers the question.

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3 years ago

A student analyzed a viral genome and found that the genome had the following nucleotide composition. 28% adenine 20% thymine 35

egoroff_w [7]

Answer: Option A) Double-stranded DNA

Explanation:

First, the presence of thymine infers that the genome is DNA.

Then, to determine whether it is single or double stranded, we check if the sum of all nitrogenous bases is equal to 100%

A + C + G + T = 100%

28% + 35% + 20% + 17% = 100%

Since all bases makes 100%, we can conclude that the genome is a double stranded DNA

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