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Biology 11 Ch 5.1
Genetic Processes: 5.1 Understanding Inheritance
Question | Answer |
---|---|
trait | a specific characteristic or feature exhibited by an organism |
true breeding | organisms that exhibit the same traits, generation after generation |
cross | the fertilization of a female gamete of specific genetic origin with a male gamete of specific genetic origin |
P generation | in breeding, the organisms initially crossed and are typically true breeding |
F1 generation | the offspring of a cross of the P generation |
monohybrid cross | a cross of two individuals that differ by one trait |
F2 generation | the offspring of a cross between the F1 generation |
dominant | the form of a trait that always appears when an individual has an allele for it |
recessive | the form of a trait that only appears when an individual has two alleles for it |
law of segregation | traits are determined by pairs of alleles that segregate during meiosis so that each gamete receives one allele |
genotype | the combination of alleles for any given trait, or the organism’s entire genetic make-up |
phenotype | the physical and physiological traits of an organism |
homozygous | an organism that has two identical alleles of a gene |
heterozygous | an organism that has two different alleles of a gene |