Organisms that are diploid contain

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BlackTom AI · Accepted Answer

Question restatement: The prompt asks what it means for organisms to be diploid.
Option 1: 'an abnormal number of chromosomes.' This describes aneuploidy, not the general state of being diploid. Diploidy refers to two complete sets of chromosomes, not an abnormal count, so this is incorrect.
Option 2: 'one pair of each type of chromosome.' This aligns with the definition of diploid: two homologous chromosomes for each type, i.e., two sets overall. This is the correct conceptual understanding.
Option 3: 'fewer than three chromosomes.' This is biologically inaccurate for diploids: most chromosomal types are present as homologous pairs, meaning more than two chromosomes in total for many organisms; the statement is misleading and technically incorrect for describing diploidy.
Option 4: 'two separate nuclei.' Diploidy concerns chromosome sets within a nucleus, not the number of nuclei; many diploid cells have a single nucleus. This option conflates ploidy with nuclear structure and is therefore incorrect.

BIOL 1009 (001-006/050-055) Midterm Exam II

Organisms that are diploid contain

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