Problem:

Question 1: Tall corn plants (T) are dominant to dwarf plants (tt). Solid green leaves (G) are dominant to leaves with a white tip (gg). A cross between two corn plants yielded the following phenotypes: 51 tall plants with a white tip on their leaves; 43 dwarf plants with solid leaves; 48 dwarf plants with white tips on their leaves; 45 tall plants with solid leaves. What are the genotypes of the parents that produced these plants?

A) TtGg x TtGg
B) TtGg x Ttgg
C) ttGG x TTgg
D) TtGg x ttgg
E) None of the above

Question 2: What structure holes the sister chromatids to the spindle fibers?

A) cyclin
B) centromere
C) MPF
D) kinetochore
E) chromatin

Question 3: At the end of metaphase I, _______________ separate.

A) centrioles
B) haploid chromatids
C) homologous chromosomes
D) germ cells
E) sister chromatids

Question 4: Special cells found in the gonads that give rise to gametes upon division are called

A) stem cells.
B) basal cells.
C) germ cells.
D) somatic cells.
E) egg cells.

Question 5: Consider two traits for an organism, determined by two genes, each of which is governed by at least two alleles. In the case of a dihybrid individual, the gametes formed will be of either the parental type or the recombinant type. Recombinant type gametes are formed because of

A) multiple alleles.
B) heterozygosity.
C) independent assortment.
D) the principle of dihybrids.
E) incomplete dominance.

Please provide correct answer.