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Definitions from the Web

Homologous Chromosomes

Definition: Homologous chromosomes, or homologs, refer to a pair of chromosomes that possess the same genes, with one inherited from each parent. They are similar in length, shape, and carry genes for similar traits at corresponding loci.

Sense 1 - Biology:

Noun: In biology, homologous chromosomes are chromosome pairs found in diploid cells, which contain matching genetic information. During meiosis, these chromosomes undergo recombination, leading to genetic variation.

Example sentence: During meiosis, homologous chromosomes exchange genetic material through a process called crossing over.

Sense 2 - Genetics:

Noun: In genetics, homologous chromosomes are chromosome pairs, one from each parent, that pair up during fertilization. They segregate during the formation of gametes, ensuring the inheritance of traits from both parents.

Example sentence: The inheritance of eye color is determined by a combination of genes on homologous chromosomes from each parent.

Sense 3 - Evolution:

Noun: In the study of evolution, homologous chromosomes provide evidence of a common ancestry among different species. Comparing the genetic sequences on these chromosomes helps determine evolutionary relationships.

Example sentence: The existence of homologous chromosomes in mammals suggests a shared ancestry dating back millions of years.

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