Question

chromosomal inheritance: term for failure of chromosomes to separate during meiosis
occasionally, chromosomes fail to separate during meiosis, leading to a condition in which the diploid number is not normal. this phenomenon is called
multiple choice
pleiotropy.
disjunction.
nondisjunction.
epistasis.
autosomy.

Explanation:

• Pleiotropy: One gene influencing multiple traits.
• Disjunction: Normal separation of chromosomes.
• Nondisjunction: Failure of chromosomes to separate during meiosis, leading to abnormal diploid number.
• Epistasis: Interaction between genes.
• Autosomy: Pertaining to autosomes (non - sex chromosomes).

Answer:

nondisjunction