Apea plant with purple flowers and yellow seeds (ppyy) is crossed with a pea plant with white flowers and green seeds (ppyy). what are the possible phenotypes of the f1 offspring? a) ppyy and ppyy b)ppyy only c) ppyy and ppyy d) ppyy , ppyy , ppyy and ppyy

B

Explanation:

Mendel's law of independent assortment which states that alleles of different genes get sorted into gametes independent of one another is taking into cognizance here.

Because each parent is homozygous, the law of segregation tells us that gametes produced by the plant with purple flowers and yellow seeds will all be PY while the gametes produced by the plant with white flowers and green seeds will all be py.

A cross between these two gametes will give us an heterozygous F1 offspring (PpYy) called dihybrids

i.e. PY × py = PpYy

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products