In an experiment, researchers determined that applying a cyclin called CLB3 during early prophase I led to premature interactions between the kinetochores of sister chromatids and microtubules. How would this interaction affect the chromosome distribution at the end of meiosis I? Sister chromatids would separate instead of homologous chromosomes, leading to a diploid number of chromosomes from one parent.

Homologous chromosomes would separate instead of sister chromatids, leading to a diploid number of chromosomes from both parents.

Homologous chromosomes would separate instead of sister chromatids, leading to a haploid number of chromosomes from both parents.

Sister chromatids would separate instead of homologous chromosomes, leading to double the number of original chromosomes from one parent.

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?