Answer:
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<span>LD
means lethal dose. LD50 is the amount of a material, administered at once to
cause the death of half (50%) of a group of test organisms. A test which shows that LD50 of a certain
chemical is 20 mg per kg means that 20 milligrams of that chemical for every 1
kilogram body weight of the test animal when administered in one dose, causes
the death of 50% of the test group.</span>
If the trait is sex-linked (on the X or Y chromosome) or autosomal (on a chromosome that does not determine sex).
If the trait is inherited in a dominant or recessive fashion.
