Mendel and Genetic Crosses (Leaving Cert Biology): Flashcards

A section of DNA controlling protein production

Position of gene on chromosome

Different forms of same gene

Capital letters (e.g., B)

Lowercase letters (e.g., b)

Genetic make-up (actual alleles present)

Physical expression/appearance from genotype

Two identical alleles (e.g., BB or bb)

Two different alleles (e.g., Bb)

Gregor Mendel

Studying inheritance of a single characteristic

Shows all possible genotypes of offspring

Diagram of genetic history of related individuals

3:1 (3 dominant : 1 recessive)

Offspring of parents in any cross