In the p generation, a true-breeding pea plant with genotype yyrr is crossed with a true-breeding plant with genotype

Parental generation is the first generation involving two individuals that are mated to foresee or analyze the genotypes of their offspring. Their probable set of offspring would constitute the so-called first filial generation (or F1 generation). A cross between two of the offspring in F1 generation would produce a new set of progeny called second filial generation (or F2 generation).In the P generation, a true breeding pea plant with genotype YYRR is crossed with a true breeding plant with genotype yyrr.

the answer to your question is tooth decay.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.