For Each of the Following Sentences, Fill in the Blanks

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below.Not all words or phrases will be used; each word or phrase can be used only once.
$\begin{array}{lll}\text { allele } & \text { germ } & \text { pollen } \\\text { bivalent } & \text { meiosis } & \text { somatic } \\\text { eggs } & \text { mitosis } & \text { sperm } \\\text { gametes } & \text { pedigree } & \text { zygote }\end{array}$

To reproduce sexually, an organism must create haploid __________ cells, or __________, from diploid cells via a specialized nuclear division called __________.During mating, the father's haploid cells, called __________ in animals, fuse with the mother's haploid cells, called __________.Cell fusion produces a diploid cell called a __________, which undergoes many rounds of cell division to create the entire body of the new individual.The cells produced from the initial fusion event include __________ cells that form most of the tissues of the body as well as the __________-line cells that give rise to the next generation of progeny.