[(J ⊃ K) • (K ⊃ L)] ⊃ (∼L ⊃

question 265

Multiple Choice

[(J ⊃ K) • (K ⊃ L) ] ⊃ (∼L ⊃ ∼J)
Which of the following propositions is a proper assumption for conditional proof to prove that the above wff is a logical truth of PL?

• A) [(J ⊃ K) • (K ⊃ L)] ⊃ (∼L ⊃ ∼J)
• B) [(J ⊃ K) • (K ⊃ L)] ⊃ ∼L
• C) (J ⊃ K) • (K ⊃ L)
• D) J ⊃ K
• E) J

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Definitions:

Chromosomes

Thread-like structures located inside the nucleus of animal and plant cells, made of protein and a single molecule of deoxyribonucleic acid (DNA), carrying genetic information in the form of genes.

DNA Molecules

The carriers of genetic information in living organisms, consisting of two long strands forming a double helix.

Epigenetic Molecules

Molecules that can modify the structure of DNA or its surrounding environment, thereby affecting gene expression without altering the DNA sequence itself.

Fraternal Twins

Twins born from two separate eggs fertilized by two different sperm cells, resulting in siblings that are genetically distinct.