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- Question- 1. In onions, male sterility is due to the interaction of a chromosomal allele pair hh and “sterile” (S) cytoplasm. All other combinations (i.e. HH/Hh and “sterile” cytoplasm, HH/Hh or hh “fertile” (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale.a) How would you perpetuate the male-sterile line? Show the cross.b) Briefly outline the method of producing hybrid seed (heterozygote) for the commercial crop. Show the cross.c) Does it matter whether the cytoplasm is fertile or sterile in the male-fertile inbred? Explain.Question1. A cell contains 4 metacentric, 4 acrocentric, and 2 submetacentric chromosomes. Under normal conditions, what percentage of the daughter cells after meiosis will have... a. 4 metacentric chromosomes?b. 2 pairs of acrocentric and submetacentric each?c. A pair of submetacentric chromosomesd. 2 acrocentric chromosomes?Question 2 If a certain species has a DNA content of 5 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a diploid cell (from the same species) in mitotic prophase? Explain your reasoning. Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.
- Question: 1. The binomial expression for two alleles in haploid organisms is (p + q) = 1.0. If a new mutation occurs at a given locus in a bacterium at a frequency of 1 x 10-6. What is the frequency of the wild type allele at that locus?Question 26 What is true for CpG Islands: Question 26 options: stretches of a few hundred base pairs of DNA where cytosines are unmethylated are not associated with genes are not found around the promoters are associated with silenced genesQUESTION 5 Which of the following statements are correct about cellular karotypes and cancer (select all that apply)? A. Chromosomal translocation are only observed in hematopoietic cell tumors and not solid tumors B. Chromosomal translocations occur at similar similar frequencies in all tumor types C. Changes in chromosome number in cancer cells are often caused by mis-segregation o chromosomes during cell division D. Cancer cells alway have the same number of chromosomes as normal cells E. A cancer cell that has no observed chromosomal instability likely has extensive mutations and/or microsatellite instability
- Reaction paper about 8 Stages of Developmental by Erik EriksonQuestion -The FDA has authorized the use of direct-to-consumer testing for three mutations in BRCA genes that elevate cancer risk, but cautions that a negative result does not rule out increased cancer risk. How can this be true? A. It is impossible to trust companies that are selling genetic tests. B. They have a conflict of interest, and so the tests should be used for entertainment value only C. These tests are not highly accurate, and false negatives are possible. Individuals with a family history should have a negative result confirmed with a different test to be sure they are truly at low risk of developing cancer There are more ways to get cancer than a mutation in the BRCA gene. D. The test only detects three out of more than 1,000 known BRCA mutations. This means a negative result does not rule out the possibility that an individual carries other BRCA mutations that increase cancer risk..QUESTION 8 What is the rate-limiting step in the assembly of both microtubules and actin microfilaments that occurs in cells but does not occur in a test tube when purified monomers in the tube together with the appropriate energy source? A Elongation B Nucleation C Treadmilling D Depolymerization E Association with binding proteins
- Question 1 In a hypothetical scenario, you wake up one morning to your roommate exclaiming about her sudden hair growth. She has been supplementing her diet with a strange new fungus purchased at the local farmer’s market. You take samples of the fungus to your lab and you find that this fungus does indeed make a protein (the harE protein) that stimulates hair growth. You construct a fungal genomic DNA library in E. Coli with the hope of cloning the harE gene. If you succeed you will be a billionaire! You obtain DNA from the fungus, digest it with a restriction enzyme, and clone it into a vector. a) What features must be present on your plasmid that will allow you to use this as a cloning vector to make fungal genomic DNAQuestion: Genetically modified animal that might be approved for human consumption is a super “muscly” pig made by the inactivation of the myostatin gene. During normal development, the myostatin protein prevents the overgrowth of muscles. How would such a pig be achieved using CRISPR? Why would it not considered the GMO?Question 3 If a certain species has a DNA content of 12 picograms in each diploid cell's nucleus when the cell in in G1 of the cell cycle, what would be the expected DNA content (in picograms) of a triploid cell (from the same species) in mitotic prophase? Consider ploidy changes and/or chromosome form changes, if applicable, when explaining your reasoning.