In the pedigree shown, the presence of a dominant autosomal genetic disorder is indicated by a shaded box. this is an autosomal inheritance, not a sex-linked trait.

part a: determine whether or not either of the parents (1 or 2) could be homozygous for the trait in question. explain your answer in 1-2 complete sentences. (2 points)

part b: “person 8” does not want to see the disorder passed on to his offspring. he does, for certain, what to get married and have children biologically. if you were a genetic counselor, what advice would you give to him about his odds on having a child with the genetic disorder if he:

(a) married a woman who is heterozygous for the condition and

(b) married a woman who does not have the genetic disorder. (2 points)

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.