Entries by John

Explain what crossing over is and how it increases genetic variation in sexually reproducing organisms.

CHAPTER 13: MEIOSIS & SEXUAL LIFE CYCLES 1. Define: Gene Allele Locus Gametes Somatic cells 2. What is the difference between sexual and asexual reproduction (in terms of number of parents, and variation in offspring)? 3. What is the difference between homologous chromosomes and sister chromatids? (Where do they “come from”? Are they identical?) 4. What […]

What is the difference between the centromere and the kinetochore?

CHAPTER 12: THE CELL CYCLE 1. Define genome: 2. What is the difference between DNA in the chromatin form and the chromosome form? What form is DNA in during most of the cell cycle? 3. What is the difference between the centromere and the kinetochore? 4. What happens during each of these phases of the cell […]

What are the differences between food intoxication and food infection? Explain this distinction in detail.

Food intoxication is a result of consumption of toxins produced in food by bacterial growth.   What are the differences between food intoxication and food infection? Explain this distinction in detail. Provide at least three specific examples of each.   A.    Food Intoxication:   1.   The specific organism The disease and its symptoms Patient […]