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26 Cards in this Set

  • Front
  • Back
What is Alleles?
One of a number of different forms of a gene.
What is Codominance?
Situation in which both alleles of a gene contribute to the phenotype,
What is Crossing Over?
Process in which honologous chromosomes exchange portions of the chromotid during meiosis.
What is Phenotype?
Physical characteristics of an organism.
What is Diploid?
Term used to refer to a cell that contains both sets of homologous.
What is Alleles?
One of a number of different forms of a gene.
What is Codominance?
Situation in which both alleles of a gene contribute to the phenotype,
What is Crossing Over?
Process in which honologous chromosomes exchange portions of the chromotid during meiosis.
What is Phenotype?
Physical characteristics of an organism.
What is Diploid?
Term used to refer to a cell that contains both sets of homologous.
What is Haploid?
Term used to refer to a cell that contains one set of chromosomes.
What are Gametes?
Cells involved in sexual reproduction.
What is Heterozygous?
Term used to describe an organism that has 2 different alleles for the same trait.
What is Homologous?
Term used to refer to chromosomes. Each have a corresponding chromosome for the opposite-sex parent.
What are Chromosomes?
Threadlike structure within the nucleus containing the genetic info.
What is genotype?
The genetic make-up of an organism.
What is Hybrid?
Offspring of crosses of parents with different traits.
What is Incomplete Dominance?
Situation in which 1 allele is not completely dominant over the other.
What is Independent Assortment?
Independent segregation of genes during the formation of gametes.
What is Nondisjunction?
Error is meiosis in which homologous chromosome fail to seperate. Example: Down's Syndrome
What is Monosomy?
When there is 1 absent member of a pair of chromosomes
What is Trisomy?
When there are 3 chromosomes, instead of the normal 2.
What is a Pedigree? What can it determine?
A pedigree is a chart (like a family tree) that shows relationships within a family. It shows the possible outcomes of traits in offspring.
What are Polygenic Traits?
Traits that are controlled by 2+ genes.
What are Somatic Cells?
Somatic cells make up the body of an organism.
What is a Tetrad?
A structure containing 4 chromotids that forms during meiosis.