For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct. __________ All prokaryotes reproduce sexually.
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Step 1: Understand the key terms in the statement. 'Prokaryotes' are organisms without a nucleus, such as bacteria and archaea. 'Reproduce sexually' means combining genetic material from two parents to create offspring.
Step 2: Recall the typical modes of reproduction in prokaryotes. Most prokaryotes reproduce asexually through binary fission, which is a simple cell division process.
Step 3: Recognize that sexual reproduction, involving meiosis and fertilization, is characteristic of eukaryotes, not prokaryotes.
Step 4: Note that some prokaryotes can exchange genetic material through processes like conjugation, transformation, or transduction, but these are not sexual reproduction in the strict sense.
Step 5: Conclude that the statement is false and the phrase 'reproduce sexually' should be replaced with 'reproduce asexually' to make the statement correct.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Prokaryotic Reproduction
Prokaryotes reproduce primarily through asexual methods such as binary fission, where one cell divides into two identical cells. Sexual reproduction, involving genetic recombination through processes like conjugation, occurs but does not produce offspring directly. Understanding this distinction is key to evaluating statements about prokaryotic reproduction.
Binary fission is the main mode of reproduction in prokaryotes, where the cell duplicates its DNA and divides into two genetically identical daughter cells. This process is rapid and efficient, allowing prokaryotic populations to grow quickly without sexual reproduction.
Although prokaryotes do not reproduce sexually, they can exchange genetic material through processes like conjugation, transformation, and transduction. These mechanisms increase genetic diversity but do not constitute sexual reproduction because they do not result in the formation of new organisms.