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Multiple Choice
Which of the following correctly defines homologous chromosomes?
A
Chromosomes that are involved in determining the sex of an organism.
B
Chromosomes that are identical and result from DNA replication.
C
Chromosomes that carry different genes but are similar in size.
D
Chromosomes that are similar in size, shape, and genetic content, one inherited from each parent.
Verified step by step guidance
1
Understand the concept of homologous chromosomes: Homologous chromosomes are pairs of chromosomes in a diploid organism that are similar in size, shape, and genetic content. Each pair consists of one chromosome inherited from the mother and one from the father.
Differentiate homologous chromosomes from other types: Unlike sex chromosomes, which determine the sex of an organism, homologous chromosomes are not involved in sex determination. They are also not identical copies like sister chromatids, which result from DNA replication.
Recognize the genetic content: Homologous chromosomes carry the same types of genes in the same order, but they may have different alleles, which are variations of a gene.
Identify the correct definition: The correct definition of homologous chromosomes is that they are similar in size, shape, and genetic content, with one chromosome inherited from each parent.
Apply this understanding: When analyzing genetic information or during processes like meiosis, homologous chromosomes pair up to ensure genetic diversity and proper segregation of genetic material.