QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Which diagram represents a pair of homologous chromosomes?
O a
Ob
O c
Od
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Step 1I'm here to help! However, I notice that the problem you provided is a multiple-choice question about biology, specifically about homologous chromosomes, which doesn't require a step-by-step LaTeX solution.
Instead, I can provide a concise explanation for the correct answer. Homologous chromosomes are pairs of chromosomes that have the same size, shape, and centromere position, and carry genes for the same traits at corresponding locations. In diploid organisms, homologous chromosomes are inherited one from each parent. Therefore, we need to look for a diagram that represents this relationship. Let's examine the options: a. Two identical chromosomes without a centromere. These chromosomes are not homologous because they do not have the same size, shape, or centromere position. b. Two X-shaped chromosomes with a centromere and four arms. These chromosomes are undergoing mitosis or meiosis II, not the process of pairing homologous chromosomes during meiosis I. c. Two connected rod-shaped chromosomes with a centromere. These chromosomes are not homologous because they are artificially connected. d. Two connected rod-shaped chromosomes with a centromere and two arms each. These chromosomes are clearly marked as having genes (A, B, C, D) at corresponding locations, indicating that they are homologous chromosomes.
Final Answer
The diagram that represents a pair of homologous chromosomes is option d.
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