A new mutant population of fruit flies has been discovered with defects in the checkpoint of the cell cycle that makes sure that DNA has finished copying. Predict what will happen over time in this population. BIU ered 吕口 D00 DOO F4 E3 E5 F6 F7 @ % & 3 5 6 8 %244
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- Direction: Use the table below to answer the questions aboutmitosis.Growth Rate of Rapidly Dividing Human Liver CellTime (hours) Number of cells0 110 220 430 840 1650 32 1. If no cells die, how many cells will there be in one week?2. If the original cell is diploid and divides mitotically, howmany copies of each chromosome will there be in 60 hours?Which type of life cycle has both a haploid and diploid multicellular stage?a. an asexual life cycleb. diploid-dominantc. haploid-dominantd. alternation of generationsConsider a locus with two alleles (b1 and b2) in a population of bacteria (bacteria are haploid). Assume that b1 individuals have a reproductive rate 8% higher than b2 individuals. The b1 and b2 alleles do not affect survival. Write an equation for the expected generation to generation change in the frequency of the b1 allele.
- Here's Oxytricha trifallax, a neat protist that contains 15,600 chromosomes as compared to our measly 46. Assuming meiosis happened exactly the same as in us (diploid organisms), How many chromosomes would you expect to find in cells of this species following Meiosis 1? Group of answer choices 7,800 31,200 23 3900Most eukaryotic organisms use sexual reproduction as their primary means of perpetuating their species. Gametes are formed via meiosis. However, some species primarily reproduce via asexual means. Reproduction is accomplished via mitosis. Aspen trees most commonly reproduce by such asexual methods of cloning.What are the advantages and disadvantages of reproduction by asexual means? Why do some species reproduce in this manner? Why don't all species?Which of these are cellular activities that sustain a single-celled organism through its lifetime? Select all that apply. A. Increases in cell size and volumeB. Processes by which individuals produce offspringC. The transmission of DNA to offspringD. Development into a multi-celled adult
- Please have define the following terms:1.) Locus2.) Diploid3.) Haploid4.) F1 Generation5.) F2 GenerationWhy is variation advantageous to populations? How does this relate to species that reproduce sexually versus those that reproduce asexually? 2. Why is it important that meiosis produces a haploid cell? Hint: think about the result over multiple generations if it did not do this.a) Fluorescent probes such as DAPI are often used tostudy cells that are in the different phases of cell cycle.DAPI is a fluorescent stain that binds to DNA. The graphshows the variation in fluorescence intensity of humanskin cells that were sorted by FACs into 2 populationsbased on the amount of fluorescence.Which phase(s) of the cell cycle are population A in?Population B? Why did you pick those phases?
- The Cavendish banana, the world’s most popular fruit, is currently threatened by extinction due to a fungus. This bananavariety is “triploid” (3n, with three sets of chromosomes) andcan only reproduce through cloning by cultivators. Givenwhat you know about meiosis, explain how the banana’s triploid number accounts for its inability to form normal gametes.Considering genetic diversity, discuss how the absence ofsexual reproduction might make this domesticated speciesvulnerable to infectious agents.Which of the following statements is true? a. Linear chromosome structures observed in a karyotype are actually pairs of sister chromatids. b. Prokaryotic and eukaryotic cells divide through binary fission. c. Because chromosomes of prokaryotes are smaller than eukaryotic chromosomes, prokaryotic nuclei are also smaller. d. The genetic information found in a eukaryotic chromosome makes up the cell's entire genome.Explain why the following statement is false: Sexual reproduction is the only mechanism for genetic change.