A change in an individual in which chromosomes may be added or subtracted is:

Explanation

A change in an individual in which chromosomes may be added or subtracted is known as "Aneuploidy." Here are explanations for each of the options:1. Non-disjunction: Non-disjunction is a meiotic error where chromosomes do not separate correctly, potentially leading to aneuploidy. It can cause an individual to have too many or too few chromosomes in their cells.2. Polyploidy: Polyploidy involves having multiple complete sets of chromosomes, typically more than the diploid number (e.g., triploidy, tetraploidy). This is a condition where whole sets of chromosomes are added, not individual chromosomes.3. Aneuploidy: Aneuploidy refers to the condition in which an individual has an abnormal number of chromosomes in their cells. This can result from non-disjunction during meiosis, causing the addition or subtraction of individual chromosomes, leading to conditions like trisomy (one extra chromosome) or monosomy (one missing chromosome).4. Homoploidy: Homoploidy is not a recognized term in genetics. It may be a misspelling or a less commonly used term.5. Euploidy: Euploidy refers to the condition in which an individual has the correct and complete set of chromosomes, either as a haploid (n) or diploid (2n) number. Euploidy doesn't involve the addition or subtraction of individual chromosomes.So, in the context of your question, the correct term for a change involving the addition or subtraction of chromosomes is "Aneuploidy."