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- Biologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.162 Chapter 14 In genetics a single set of chromosomes is symbolized by the letter "n." Any cell that has only one set of chromosomes is termed haploid. Haploid means that the cell has one of each kind of chromosome. The set concept will be used throughout the rest of this lab, so the following questions were designed to aid you in understanding and recognizing sets. Remember that a set is a group of objects related in function and generally used together. 1. Pretend that the fingers of one hand represent chromosomes. (Count your thumb as a finger.) Hold up your hand. ? QUESTION a. How many fingers (chromosomes) do you have on one hand? b. Do you have different kinds of fingers on one hand? c. Do you have more than one of each kind of finger on one hand? set(s) d. Judging by the definition of a set, you have of fingers on one hand. 2. Pretend all the numbers within the circle represent chromosomes. 4 a. How many numbers are there? 2 b. Are there different kinds of numbers? c. Is there…Is each of these statements true of chloroplast or mitochondrial genomes, both, or neither? a.contain tRNA genes
- To define an SMC (structure maintenance of chromosomes) complex and give two example.EC4. In a test-cross of trihybrid drosophila the following phenotypes and number of offspring were found. Without doing any calculations, answer the following questions: +++ 669 abc 653 ++c 121 ab+ 139 +b+ 2280 a+c 2215 +bc 3 a++ 2 a) What were the genotypes of the parental strains? (fill in) b). What is the gene order?GENETICS With a schematic diagrams state the differences between dNTP and ddNTP
- Archegonium is an example of female gametangium in plants, which produce motile egg cell. * O False O True The enzyme which catalyzes complementary DNA from RNA templatI have this same question, but the answer is supposed to involve mitochondrial uncoupling?Make a reflection paper based on this video about cloning https://www.youtube.com/watch?v=jKu0camxQ2k
