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Cells Chapter 3 ツ

This is cells chapter 3. ( ͡° ͜ʖ ͡°)

TermDefinition
Heredity The passing of traits from parents to offspring.
Trait A specific characteristic that an organism can pass to its offspring through its genes.
Genetics The scientific study of heredity.
Fertilization The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell.
Purebred An offspring of many generations that has the same form of a trait.
Gene A sequence of DNA that determines a trait and is passed from parent to offspring.
Alleles The different forms of a gene.
Dominant Allele An allele whose trait always shows up in the organism when the allele is present.
Recessive Allele An allele that is hidden whenever the dominant allele is present.
Hybrid An offspring of crosses that has two different alleles for a trait.
Probability A number that describes how likely it is that a particular event will occur.
Punnett Square A chart that shows all the possible combinations of alleles that can result from a genetic cross.
Phenotype An organism's physical appearance, or visible traits.
Genotype An organism's genetic makeup, or allele combinations.
Homozygous Having two identical alleles for a particular gene.
Heterozygous Having two different alleles for a particular gene.
Incomplete Dominance A situation in which one allele is not completely dominant over another allele.
Codominance A situation in which both alleles for a gene are expressed equally.
Multiple Alleles Three or more possible alleles of a gene that determine a trait.
Polygenic Inheritance The inheritance of traits that are controlled by two or more genes, such as height in humans
Meiosis The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half.
Created by: bml12585
 

 



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