Which process forms gametes?

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Study for the ELANCO Advanced Animal Science Exam. Enhance your knowledge with flashcards and multiple choice questions, with hints and explanations for each question. Get ready for your exam!

Multiple Choice

Which process forms gametes?

Explanation:
Meiosis forms gametes because it reduces the chromosome number from diploid to haploid, producing the cells that participate in sexual reproduction. It happens in two rounds of division after DNA replication, meiosis I and meiosis II, and includes pairing and crossing over of homologous chromosomes as well as independent assortment. This combination creates genetic variation and yields four haploid cells from one germ cell. In contrast, mitosis preserves the chromosome number and makes diploid somatic cells that are genetically identical, not gametes. Fertilization then combines two gametes to restore the diploid chromosome set.

Meiosis forms gametes because it reduces the chromosome number from diploid to haploid, producing the cells that participate in sexual reproduction. It happens in two rounds of division after DNA replication, meiosis I and meiosis II, and includes pairing and crossing over of homologous chromosomes as well as independent assortment. This combination creates genetic variation and yields four haploid cells from one germ cell. In contrast, mitosis preserves the chromosome number and makes diploid somatic cells that are genetically identical, not gametes. Fertilization then combines two gametes to restore the diploid chromosome set.

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