Glossary - Meiosis

Glossary - Meiosis - Glossary Meiosis allele One of two or...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Glossary Meiosis allele One of two or more molecular forms of a gene that arise by mutation and code for different versions of the same trait. asexual reproduction Any reproductive mode by which offspring arise from a single parent and inherit the genes of that parent only. crossing over At prophase I of meiosis, an interaction in which nonsister chromatids of a pair of homologous chromosomes break at corresponding sites and exchange segments; genetic recombination is the result. diploidy Presence of two of each type of chromosome (i.e., pairs of homologous chromosomes) in a cell nucleus at interphase. Compare haploidy. egg Mature female gamete; an ovum. fertilization [L. fertilis, to carry, to bear] The fusion of a sperm nucleus with the nucleus of an egg, thus forming a zygote. gamete [Gk. gametes, husband, and gamete, wife] Haploid cell, formed by meiotic cell division of a germ cell; required for sexual reproduction. Eggs and sperm are examples. gene
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/13/2012 for the course IS 3020 taught by Professor Staff during the Spring '08 term at Kennesaw.

Ask a homework question - tutors are online