Dna law of segregation - Study guides, Class notes & Summaries

Bio 1201 Gregg exam 3 questions and answers rated A+ the units of heredity and are made up of segments of DNA genes how many chromosomes do humans have in the nucleus of their somatic cells? 46 chromosomes (23 pairs) the two chromosomes in each pair are called... homologous chromosomes/homologs each pair of homologous chromosomes includes... one chromosome from each parent what does meiosis result in 4 haploid daughter cells what does meiosis 1 do separates homologous chrom...

2023 ATI TEAS 7 SCIENCE EXAM PREP Q&A 1. 1. QUESTION Which of the following correctly describes the law of segregation? o It states that the hereditary factors segregate independently of one another during gametogenesis. o It states that all the genetic factors are present in the DNA. o It states that the segregation of the dominant trait in the phenotype happens in the hybrid offspring. o It states that allele pairs segregate during gametogenesis and reunite randomly during the fertili...

Cell Theory - ANSWER-Discovered in the 17th century 1. All living things are composed of cells 2. The cell is the basic unit of life 3. The chemical reactions of life take place inside the cell 4. Cells arise from only preexisting cells 5. Cells carry genetic information in the form of DNA. This genetic material is passed from parent cell to daughter cell 6 Kingdoms - ANSWER-Bacteria, Archaea, Protista, Fungi, Plantae, and Animalia Prokaryotic - ANSWER-"before nucleus", lacks a memb...

CBE 235 Final.Lac Operon - correct answer -involved in heating lactose: inducible operon 1) The lactose repressor protein coded by Lacl bound to the operator tightly near the mRNA start site, blocking the ability of RNA poly to bind 2) Lactose introduced--> Lac repressor binds to lactose and changes conformation such that it can no longer bond to the operator 3) RNA poly can access the promoter and transcription goes 4) LacZ,LacY,LacA are transcribed Gregor Mendel Experiment - correct ...

Genetics final study guide intro to molecular genetics mls 400 oakland Genetics Final Exam Important definitions Base: pyrimidines & purines (C, U, T) (A, G) Nucleoside: base + sugar (phosphorylated to become a nucleotide) Nucleotide: phosphate group + sugar + base Sugar may be ribose (RNA) or deoxyribose (DNA - missing hydroxyl group) Antiparallel: 2 sequences have opposite orientation with regard to their 5’ & 3’ ends Complementary: AT/GC rule; purines bond to pyrimidines, and vice ...

Bio 202 EXAM 3 QUESTIONS AND CORRECT DETAILED ANSWERS How is recombinant DNA technology used to clone the human GH gene? 1st step! - ANSWER 1. use PCR to obtain the gene (Simply cutting the DNA with restriction enzymes would not be an effective way to isolate a specific gene. The genome would be cut into so many fragments, if you ran a gel it would be a smear! Which fragment is yours? You would need hybridization to isolate your fragment. Wouldn't have much DNA- not like the amo...

mitosis - Answer-division of the nucleus -results in two identical daughter cells -direct duplication of genetic material -no change in chromosome number -10% of cell cycle interphase - Answer-90% of cell cycle -3 phases: G1, S, G2 G1 - Answer-chromosomes unfold, organelles multiply, membranes are synthesized S - Answer-chromatin is replicated G2 - Answer-preparation for cell division centromere - Answer-specialized region of the chromosome where sister chromatids are attached phragmo...

a cell type that has half the alleles of a somatic cell - haploid a condensed form of DNA and proteins that can be seen during mitosis and meiosis; each one contains several genetic loci - chromosomes a condensed form of DNA and proteins that can be seen during mitosis and meiosis. These contain the genes. - Chromosomes A diploid cell becomes two haploid cells during which phase? - meiosis I a disease inherited on a dominant allele that results in progressive deterioration of the nervous s...

Life Science 15 Phelan Graded A+ Evolution ️A change in allele frequencies over time. Allele ️A variant form of a gene. Gene ️A segment of DNA that provides instructions for producing a trait. Natural Selection ️Involves variation, heritability, and differential reproductive success. Fitness ️The relative reproductive success of a genotype or phenotype. Four Agents of Evolution ️Natural selection, mutation, gene flow, genetic drift. Natural Selection ️Non-random elimination ...