Which figure shows homologous chromosomes with heterozygous alleles?

Homologous chromosomes are those chromosomes that are similar in length, centromere location and, gene position. The position of a gene on each homologous chromosomes are same, however, it may contain different alleles.

One of the homologous pairs of a gene is derived from the mother and other from the father. The different form of the same genes is called as an allele.

I dont know what the answer choices are but hope this helps

The effects on the concentration of SO3 gas when the following changes occur after initial equilibrium has been established in this system (N.C. = no change) by adding a catalyst.

2SO2(g) + O2(g)  2SO3(g) + 46.8 kcal

So that even though there is an addition of catalyst, no change in reactants or products has occurred because catalyst only provides a faster pathway for the reaction to occur.