Type the correct answer in the box. Spell all words correctly. Which microscope allows two samples to be viewed simultaneously? Forensic scientists use the microscope to view two samples simultaneously at extreme magnification.

Comparison microscope

Explanation:

The correct answer would be the comparison microscope.

The comparison microscope consists of two compound microscopes with a center eyepiece. The eyepiece captures and displays the images from the two microscopes and the observer can compare and contrast for investigative purposes.

The capacity to produce two images for comparison purposes makes the microscope useful in forensic investigations.

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we solve the problem using the hardy-wineberg equation.

let us start with the homozygous recessive proportion of individuals with sickle cell anaemia,

we have the proportion as q² = 0.25.

∴ q = 0.5 (frequency of hbs in population)

further,

solving for the frequency of normal cell by using the fact that,

p + q = 1

∴ p = 1 - 0.5 = 1 - 0.5 = 0.5

now we can calculate 2pq in p² + 2pq + q², which is the frequency for heterozygous carriers of sickle cell anaemia,

∴ 2pq = 2 x 0.5 x 0.5 = 0.5

and the homozygous normal cell individuals proportion is given by the expression,

∴ p² = 0.5² = 0.25

hence, the carriers for sickle cell anaemia are in proportion, 0.5, or 50%.