Inbred Strains with Individuals of a Relatively Homogeneous or Constant

question 1

Essay

Inbred strains with individuals of a relatively homogeneous or constant genetic
background are often used to determine the influence of genes or the environment on phenotypic variation. Variation observed between different inbred strains reared in a constant or homogeneous environment would likely be caused by genetic factors.
What would be the source of variation observed among members of the same inbred strain reared under varying environmental conditions?

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Definitions:

Decimal Places

Refers to the number of digits to the right of the decimal point in a number, indicating its precision, often important in engineering measurements.

Extension Lines

Lines used in technical drawing that extend from the points on the drawing to which a dimension refers, helping to clearly identify the dimension's extents.

Arrowheads

Used in technical drawings to indicate the end of a dimension line or leader line.