Heredity and Genetics (C652)(WGU) exam 2023 with 100% correct answers

gene a string of nucleotides within a DNA molecule that is the basic structural and functional unit of genetics allele this is the term for one of a number of different forms of a gene phenotype physical characteristics of an organism genotype genetic makeup of an organism heterozygous this term describes an organism that has two different alleles for a trait homozygous this term describes an organism that has two identical alleles for a trait dominant describes a trait that covers over, or dominates, another form of that trait recessive an allele that is masked when a dominant allele is present meiosis cell division that produces reproductive cells in sexually reproducing organisms; one diploid cell containing forty six chromosomes undergoes one round of chromosome replication and two rounds of division to produce four haploid cells each of which contains one copy of each chromosome Interphase this is the phase during which the chromosomes replicate Prophase I during this phase chromosomes condense and become visible under a microscope, the nuclear envelope disappears, and the spindle becomes organized Metaphase I during this phase paired homologous chromosomes line up at the equator of the cell with each chromosome attached to spindle fibers from opposite poles of the cell