BISC 120 week 1 Questions and Correct Verified Answers Highly Recommended Version For Already A Graded|New and Revised!!!

What is a genome All the DNA in one cell of an organism What is DNA made of Nitrogenous base (A,T,C,G) Sugar (deoxyribose) backbone And phosphorus group Why does DNA condense into chromosomes before replication Organize genetic info into 1 chromosome/chromatid, easy to move What is a chromosome a long continuous thread of DNA that consists of numerous genes Order of organization for genetic information Top Mark Questions and Correct Verified Answers Top Mark !!! 2 2 Chromosome-gene- DNA Can the amount of DNA in a genome vary Can be a single molecule in prokaryotic organisms or multiple in eukaryotes How many genes do chromosomes carry Hundreds to thousands of genes (and each of these genes code for a different trait) How many chromosomes do humans have? 46 (23 pairs) Cell division Reproduction of cells and passing on of genetic ifnromation Asexual reproduction Single celled organisms form of reproduction through cell division What do multicellular organisms use cell division for growth, maintenance, and repair of cells and tissues (and growth/form of new offspring) Top Mark Questions and Correct Verified Answers Top Mark !!! 3 3 What is cell division used in after birth Growth and repair/renewal Meiosis Cell division that produces reproductive cells in sexually reproducing organisms How many chromosomes do gametes have and why 23 so that when fertilization occurs there is an equal pairing from father and mother that results in the total 46 chrom