science ch. 3
Terms
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- heredity
- the passing of traits form parnet to offspring
- dominant allele
- an allele always shows up in the orgainism when is present
- traits
- a character is tie that an organism can pass from parent to offspring
- probability
- a # describes how likely it is an event will occur
- homozygous
- 2 indentical alleles
- allele
- different forms of genes
- meiosis
- process that occurs in the formation of sex cells
- genotype
- its genetic makeup
- ressecive allele
- it is masked when a dominant alleleis present
- genetics
- the scientific study of heredity
- hybrid
- 2 different alleles
- mutation
- a change in DNA
- purebred
- offspring of many generations that have the same traits
- punnet square
- chart shows all the possible combinations of alleles
- codominance
- a condition in which neither 2 alleles are dominant nor recessive
- messenge RNA
- cpies the coded message from DNA in the nucleus and carries the message into the cytoplasm
- heterozygous
- 2 different alleles
- genes
- info that controls the traits
- phenotype
- its physical apperance
- tsnsfer RNA
- carries amino acids to the ribosomes and adds it to the growing chain of proteins