When a F1 plant (heterozygote--Gg) undergoes meiosis, what gamete types will it produce, and in what proportions?

1/2 G and 1/2 g

What are Punnett squares used for?

Representing the types and frequencies of gametes and progeny in experimental crosses. The probability of two independent events occurring simultaneously is the product of their individual probabilities

Mendel's Law of Segregation

Allele pairs segregate equally into gametes during meiosis. A gamete will have only one allele of any given gene and that the probability of a gamete having one allele or the other is equal.

True-Breed

The alleles are homozygous.

Which of the following would be true of a plant heterozygous for a single gene controlling flower color? (assume complete dominance).

If crossed with another heterozygous plant, the majority of progeny will have the dominant flower color.