Genetics Review DNA (Deoxyribonucleic Acid): Stored inside chromosomes and contain all instructions for life It is made up of Ribose (sugar)‚ phosphate‚ and when of 4 Nitrogenous bases (Adenine‚ Thymine‚ Guanine and Cytosine) A Nucleotide consists of a Phosphate molecule‚ a sugar molecule‚ and a Nitrogenous base pair The nitrogenous bases always pair up AT and CG Each human has 46 chromosomes 23 pairs in total 1 pair sex chromosomes (that define your sex‚ male XX‚ female XY) 22
Premium Mitosis Meiosis Chromosome
Gene Mapping in Ascospore Sordaria Cultures by Recombination Abstract The laboratory experiment demonstrates the process of meiosis using the Sordaria Fimicola fungi. Meiosis is important because it is the process that generates diversity in genetics. A wildtype was crossed with two mutant types: tan and grey. In order to exhibit recombination‚ the sequence of ascospores needed to result in a 2:2:2:2 or 2:4:2 sequence. From the crossover
Premium Meiosis Chromosome Gene
NATIONAL SENIOR CERTIFICATE GRADE 12 LIFE SCIENCES P1 VERSION 2 (OLD CONTENT) FOR PART-TIME CANDIDATES NOVEMBER 2011 FINAL MEMORANDUM – 24/11/11 MARKS: 150 This memorandum consists of 12 pages. Copyright reserved Please turn over Life Sciences/P1 (Version 2) (Part-time) 2 NSC – Memorandum DBE/November 2011 PRINCIPLES RELATED TO MARKING LIFE SCIENCES 2011 1. If more information than marks allocated is given Stop marking when maximum marks is reached and put a wavy line and ’max’ in the
Premium Chromosome Y chromosome Meiosis
Exercise 13 MITOSIS: REPLICATION OF EUKARYOTIC CELLS ANSWERS TO QUESTIONS 1. a. Mitosis and cytokinesis are often referred to collectively as "cellular division." Why are they more accurately called cellular replication? The result of mitosis is production of two cells (replicates) identical to the parent cell. The genetic material is replicated rather than divided. b. Does the cell cycle have a beginning and an end? The organization of our study of cellular events indicates a beginning and
Premium DNA Chromosome Meiosis
Meiosis Review Worksheet Pledge: _____1. If the sperm cell of a fruit fly has 4 chromosomes‚ then the number of chromosomes in each body cell is: a. 2 b. 4 c. 6 d. 8 e. 16 _____2. Of the following cells‚ the only one to have the haploid number of chromosomes is: a) skin b)muscle c) nerve d) connective e) ovum _____3. The diploid number is restored as a result of: a) differentiation
Free Meiosis Chromosome Gamete
also attempt to cross-pollinate different daylilies in order to obtain even more unique flowers. However‚ not all daylilies are the same genetically‚ which complexifies the process of breeding the plants. If the two plants are not of the same genetic ploidy‚ then the two plants cannot produce seed without
Premium Plant Nutrient Botany
Results During our experiment we were able to obtain data that showed that the raspberry had the highest DNA yield over all of the fruits at 1.93%. Our next highest DNA yield was at 1.11% and came from our blueberry sample. Although our blackberry had the third highest DNA yield there was a significant drop in our percentage to .921%. Based on our results the banana had the least amount of DNA yield with .138%. Discussion The purpose of this experiment was to be able to better understand the
Premium DNA Genetics Gene
Meiosis How does sexual reproduction lead to genetic variation? Why? Cells reproduce through mitosis to make exact copies of the original cell. This is done for growth and repair. Sexually-reproducing organisms have a second form of cell division that produces reproductive cells with half the number of chromosomes. This process is called meiosis‚ and without it‚ humans‚ oak trees‚ beetles‚ and all other sexually-reproducing organisms would be vastly different than they are today. Model
Premium Meiosis Mitosis Chromosome
Republic of the Philippines NUEVA ECIJA UNIVERSITY OF SCIENCE AND TECHNOLOGY San Isidro campus‚ San Isidro‚ Nueva Ecija FEASIBILITY OF UBE AS BASED FOR ESPASOL MAKING In Partial Fulfilment of the Requirement in Science Technology and Society Mr. Reynante Bustillos GENERAL SCIENCE MAJOR: abegail cabalar BSE- ll March 2013 i Acknowledgement We wish to convey our nearest appreciation to the following person
Premium Yam Amino acid Essential amino acid
Mutation Variation of organisms occurs from linkages and crossing over. The Independent Assortment of Random Fusion of gametes also creates variation. Mutation will occur and new gametes or alter existing ones. What is mutation? Mutation is a permanent alteration of a genomic sequence. It may be divided into two categories: 1) Point/ Gene Mutation 2) Chromosomal Mutation Mutations may either be advantageous or disadvantageous and are not all inherently negative Point/ Gene Mutation
Premium DNA Chromosome