The following characteristics are associated with all variations in chromosomal structure EXCEPT ____. A. Breakages result in the production of sticky ends B. They begin with a chromosomal break C. They can result in genomic instability D. Broken ends are prone to degradation E. They cause heritable defects when induced during mitosis in somatic cells

The amount of DNA in a cell in G1 can be represented as 2C. The amount of DNA in a cell in telophase II is: a. C b. 2C c. 4C d. 8C e. none of these ...explain your answer

Which of the following are characteristics of aging cells (select all that apply)? A. Chronic inflammation results in premature shortening of telomeres B. Lengthening of telomeric DNA sequence C. Accumulation of telomere-dysfunction–induced foci (TIFs) D. Older cells produce more telomerase E. Increased erosion of telomeres

For most dividing cells in a diploid organism, the time spent in mitosis is approximately 4% of the total time of the cell cycle. In a population of continually dividing cells isolated from this organism, most of the cells would... A.have highly condensed chromatin. B.  be in interphase (G1 or S or G2). C. be in mitosis. D.  be in meiosis.

A mutation in the Ras protein could directly affect improper _____ Select one: a. cell signaling leading to alterations in cell division b. cell signaling leading to alterations proteasome activity c. microtubule assembly leading to faulty cell division d. protein degradation during the cell cycle e. protein phosphorylation in the cell cycle

A chromosome that has spindle fibers attached across its whole length…   a. has a localized centromere   b. is very common   c. has a holocentric centromere   d. has elevated histone content   e. has a regional centromere

The _____ is the physical location that sister chromatids are held together and where microtubules physically attach during mitosis.   a. centriole b. centrosome c. centromere d. chromatin

Which of the following statements are true regarding homologous pairs of chromosomes? Select all that apply. A. They are the same size B. Their prescence indicates a cell is a diploid C. They are identical copies of one another D. One of the homologous chromosomes in a set is synthesized during S phase E. They line up next to each other during metaphase I of meiosis F. They are separated in anaphase I of meiosis