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Unit 2 Topic 4 Vocab

TermDefinition
Asexual Reproduction Biological process where a signle parent organism produces offspring without fertilization.
Sexual Reproduction Biological process where two reproductive cells (gametes) combine to form a unique diploid offspring.
Chromosome Structure made of protein and a single molecule of DNA.
Chromatid One of the two identical halves of a duplicated chromosome.
Gene The basic physical and functional unit of heredity composed of DNA.
Allele One of two or more variations of a gene located at a specific position on a chromosome.
Meiosis A specialized type of cell division in sexually reproducing organisms that reduces the chromosome number in half.
Homologous chromosomes A paired set of one maternal and one parental chromosome in a diploid organism that share the same lenth and gene sequence.
Tetrad A group of four chromatids formed when two paired homologous chromosomes come together during meiosis.
Crossing Over Biological process where homolgous chromosomes pair up and exchange segments of genetic material during meiosis.
Gamete Reproductive sex cell that unites with another cell during sexual reproduction.
Diploid A cell or organism that has two complete sets of chromosomes, one inherited from each parent.
Haploid A cell that contains a single set of unpaired chromosomes.
Created by: user-2051329
 

 



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