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chapter 4
section 1& 2
Question | Answer |
---|---|
the passing of traits from parents to offspring | heredity |
a charactristic that an organism can pass on to its offspring through its genes | trait |
the scientific study of heredity | genetics |
the joining of a sperm and an egg | fertilization |
the offspring of many generations that have the same traits | purebread |
the set of information that controls a trait | gene |
the different forms of a gene | alleles |
an allele whose trait always shows up in the organism when the allele is present | dominant allele |
an allele that is masked when a dominant allele is present | recessive allele |
an organism that has two diffrent alleles for a trait | hybrid |
a number that discribes how likely it is that an event will occur | probaility |
a chart that shows all the possible combinations of alleles that can result from a genetic cross | punnet square |
an organism's physical apperance, or visibale traits | phenotype |
an organism's genetic makeup,or allele combinations | genotype |
having two identical alleles for a trait | homozygous |
having two diffrent alleles for a trait | heterozygous |
a condition in witch neither of two alleles of a gene is dominate or resessive | codominance |