SDSU Biol 203 Exam 4 Feuer Questions & Answers(Latest Update 2024)

What is the difference between heterozygous and homozygous individuals? - ANSWER All of the gametes from a homozygote carry the same version of the gene while those of a heterozygote will differ When constructing a Punnett square, the symbols on the outside of the boxes represent _______, while those inside the boxes represent _______. - ANSWER gametes, progeny True or false? The same phenotype can be produced by more than one genotype. - ANSWER True. Since there exist dominant and recessive versions of many genes, a phenotype that is based upon the dominant version will be expressed in both homozygous (AA) and heterozygous (Aa) genotypes True or false? In diploid organisms, a dominant phenotype will only be expressed if the individual is homozygous dominant for that trait. - ANSWER False. A dominant phenotype is indeed expressed if the individual is homozygous dominant for that trait, but the dominant phenotype is also expressed if the individual is heterozygous for the trait. In fact, heterozygous expression is the definition of dominant If an organism with the genotype AaBb produces gametes, what proportion of the gametes would be Bb? - ANSWER None. Alleles of the same gene must separate during gamete formation; thus, the two B alleles would be distributed to different gametes Two mice are heterozygous for albinism (Aa) . The domin