What is a limitation of using electron microscopes to view specimens?
a. resolution is weak and cannot make out details of very small specimens.

b. electron beams are dangerous and can only be used sparingly.

c. you cannot view live specimens because the necessary preparation kills cells.

d. you cannot view transparent specimens because of the microscope’s low resolution.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.