Chromosomal crossover

Using the P22 phage, a lysate was prepared for the transduction of chloramphenicol resistance from a resistant S. typhimurium LT2 strain to a sensitive strain of S. typhimurium. It is believed that P22 phages package 44 kb of chromosomal DNA at random with a 2% frequency and a 2% chance of homologous recombination events occurring (MIC302 lab manual). S. typhimurium has a chromosome length of approximately 4,857 kb, so it was calculated that 0.00036% is the percent chance that the gene for…

Barbara McClintock was a woman ahead of her time. She was heralded as the most distinguished cytogeneticist of her time, in a time where female influence in that field, or any STEM field was nearly unheard of. McClintock overcame obstacles in her academic career, and went on to produce her research on ‘jumping genes’, which a major impact that lasted for generations to come and garnered her numerous accolades and awards. Barbara McClintock was born on June 16th, 1902, in Hartford, Connecticut,…

Will Turner’s syndrome be able to be mitigated in the next 10 years? DIAGNOSIS AND OCCURANCE Turner’s syndrome is a chromosomal condition which occurs in women due to an incomplete meiotic division. It results in the sex chromosome being incomplete and results in an ‘XO’ in the 23rd pair instead of the regular ‘XX’. This results in the birth of a female with Turner’s syndrome – resulting in a short stature, infertility, heart defects and learning disabilities. As Turner’s syndrome is due to an…

To me, life begins at validity and not at conception. I am a Christian and a science student and I support abortion. My support for abortion stems out of many reasons which include individual’s right, especially women’s moral right. In addition, it preserves the woman’s life in case the woman’s life is in jeopardy. Also, abortion prevents severely malformed babies from being born and suffer. Abortion is vital for gender equality and population control. Abortion helps science to research…

of haploid or sometimes even diploid which ends with the production of two daughter cells whereas meiosis carries out two cell division of diploid cells which produces four cells. Mitosis has no crossover which makes the daughter cells identical to the parent cell whereas meiosis has one at least crossover with one set homologous chromosomes with causes variation among its products. In mitosis the chromosome number in each of nucleus of its two daughter cells is maintained from the parent cell…