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lesson 1
sexual reproduction and meiosis
Term | Definition |
---|---|
sexual reproduction | a type of reproduction in which the genetic materials from two different cells combine, producing an offspring. |
egg | female sex cell, forms in a ovary. |
sperm | male sex cell, forms in a testis. |
fertilization | an egg cell and a sperm cell join together. |
zygote | a new cell that forms from fertilization. |
diploid | cells that have pairs of chromosomes |
homologous chromosomes | pairs of chromosomes that have genes for the same traits arranged in the same order. |
haploid | cells that have only one chromosome from each pair. |
meiosis | one diploid cell divides and makes four haploid sex cells |