Dominant and Recessive. Dominant – the trait we see (expressed with capital letter, A) Recessive – trait that is masked (expressed with lower case letter, a) Which is better, dominant or recessive?. Dominance. Organism with two of the same allele – homozygous AA, aa
Allele makeup of an individual
Tt T T tt
RR Rr rr
Observable characteristics of an individual
A Tt (tall) plant is crossed with a tt (short plant). What percentage of the offspring will be tall?
A green pea sead (gg) is crossed with a hybrid yellow seed (Gg). What will be the genotypic and phenotypic ratios of the offspring?
A heterozygous plant ( (Gg). What will be the genotypic and phenotypic ratios of the offspring? Tt) is crossed with another heterozygous (Tt) plant. What percentage of the offspring will be tall?
In guinea pigs, rough coats are dominant over smooth coats. An Rr guinea pig is crossed with an Rr guinea pig.
What are the chances of each genotype and phenotype?
Include genotypic and phenotypic ratios.
For example: GGbb/ggBb or RRYY/rryy