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 may be used more than once.
$\begin{array}{lll}\text { allele } & \text { genotype } & \text { monohybrid } \\\text { chromosome } & \text { heterozygous } & \text { pedigree } \\\text { dependent } & \text { homozygous } & \text { phenotype } \\\text { dihybrid } & \text { independent } & \text { segregation }\end{array}$

Gregor Mendel studied pea plants and developed some very important ideas about how genes are inherited.These studies used plant strains that were true-breeding and always produced progeny that had the same __________ as the parent.These strains were true breeding because they were __________ for the gene important for a specific trait.In other words, for these true-breeding strains, both chromosomes in the diploid pea plant carried the same __________ of the gene.Mendel started out examining the inheritance of a single trait at a time, and then moved on to examining two traits at once in a __________ cross.His studies examining the inheritance of two traits in one cross allowed him to discover what is now known as Mendel's law of __________ assortment.Geneticists can study the inheritance of specific traits in humans by analyzing a __________, which shows the phenotypes of different family members over several generations for a particular trait.