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U2T4 Meiosis Vocab

TermDefinition
Asexual Reproduction The production of genetically identical offspring from a single parent.
Sexual Reproduction The production of offspring that inherit some of their genetic information from each parent.
Chromosome Condensed chromatin.
Chromatid During prophase, each duplicated chromosome condenses to appear as two thick strands known as sister chromatids.
Gene Sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from the parent to offspring.
Allele One of the different forms of a gene.
Meiosis Meiosis is a process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
Homologous Chromosomes Each of the four chromosomes from the male parent has a corresponding chromosome from the female parent.
Tetrad In prophase I of meiosis, each replicated chromosome pairs with its corresponding homologous chromosome. This pairing forms a structure called a tetrad, which contains four chromatids.
Crossing-Over As the chromosomes pair, they sometimes undergo a process called crossing-over in which bits and pieces of the homologous chromosomes are exchanged.
Gamete Sex cell.
Diploid Meaning "Double". the diploid cells of most adult organisms contain two complete sets of inherited chromosomes and two complete sets of genes.
Haploid Some cells have a single set of chromosomes, and, therefore, a single set of genes. Such cells are haploid, meaning "single."
Created by: user-2051561
 

 



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