Certain Unicellular Eukaryotes, Including Diatoms and Some Yeasts, Have Mechanisms

question 27

Multiple Choice

Certain unicellular eukaryotes, including diatoms and some yeasts, have mechanisms of nuclear division that may resemble intermediate steps in the evolution of mitosis. Which of the following is a characteristic feature of nuclear division in these organisms?

• A) They reproduce by binary fission in their early stages of development and by mitosis when they are mature.
• B) They have circular chromosomes that are segregated by a mitotic spindle.
• C) Chromosomes are segregated by a mitotic spindle, but the nuclear envelope remains intact during division.
• D) Chromosomes are segregated by attachment to the plasma membrane.

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Definitions:

Moral Hazard

The situation where one party can take risks because they know that they will not bear the consequences of their actions, often seen in situations where individuals or institutions are protected by insurance or other safety nets.

Insurance

A contract represented by a policy in which an individual or entity receives financial protection or reimbursement against losses from an insurance company.

Avoiding Insured Risk

Strategies or actions taken to minimize exposure to risks that are typically covered by insurance policies.