PDF-Meiosis and recombination

1 10810 CMB lecture 7Eric Xing Sourcethe process which starts with a diploid cell having one set of maternal and one of paternal chromosomes and ends up with four haploidcells each of which has. Neither. Both. Meiosis. Mit. , Mei, Both, Neither. Centrosomes. replicate twice. Meiosis. Centrosomes. replicate twice. Mit. , Mei, Both, Neither. Produces gametes in plants. Neither. Produces gametes . Gil . McVean. There are no new questions in population genetics. …only new types of data. Genome sequences of entire populations. Data with linkage to deep phenotype information. Data from multiple species. Milky Way. Marina Berezina (Max Planck . IfR. ). Kevin Hardegree-Ullman (Univ. of Toledo). Yanina. . Metodieva. (Univ. . of . Sofia). Amanda . Kepley. (NRAO, GBT). Image Credits: www.otakupop.com, www.cv.nrao.edu. Zhi. -Ming Ma. . ECM2013 . PolyU. . Email: mazm@amt.ac.cn . http://www.amt.ac.cn/member/mazhiming/index.html. A New Method for Coalescent Processes with Recombination . MUTAGENESIS. DNA DAMAGE. DNA REPAIR. RECOMBINATION. MUTAGENESIS. Mutations. Mutations are heritable permanent changes in the base sequence of DNA.. Point mutations may be . transitions. (e.g. GC→AT) or . Part 3. Location of genes. Meiosis. Linkage and mapping. A map of the human Y chromosome. 2. Location of genes. One of the things Mendel didn’t solve was exactly where genes are located in cells. His precise description of how genes behaved, though, helped other scientists determine that . CfE Advanced Higher Biology. Unit 2: Organisms and Evolution. 2bii. – Meiosis forms variable gametes. Terminology (4). Sexual life cycle of animals (1). Meiosis – an overview (1). Meiosis I (4). Alexei Fedorov. Recombination is an intrinsic property of nucleic acids and these molecules are susceptible to joining their ends. .. Evolution invented thousands of proteins that assist DNA recombination and became crucial for cell functioning. . Drosophila . pseudoobscura. species group. Mohamed A. F. Noor. Duke University. EVOLUTION:. Two fundamental processes. Change within . lineages (adaptation important). Form new lineages . (speciation important). Key Concepts:. What happens during the process of meiosis?. How is meiosis different from mitosis?. Types of . Reproduction. Section 11-4. ASEXUAL. SEXUAL. 1. One Parent. 2. Binary fission (in prokaryotes) or mitosis in (eukaryotes).. Meiosis is the. . type of . cell division by which . germ cells . (eggs and sperm) . are produced. . One parent cell produces . four . daughter cells. . Daughter cells have half the number of chromosomes found in the parent cell. These phenomena observed in Saccharomyces cerevisiae are highly conserved in eukaryotes, thus rendering yeast, which is easy to use, an essential model organism. Researchers identified and studied fun Pairs of allelic genes may exchange chromosomal locations( genetic elements can move, both between chromosomes and within them.) by a process known as genetic recombination.. Homologous recombination . the attB1 & 2 sequences are relatively short and are therefore suitable for addition to gene-specific primers . After PCR amplification, fragment contains the attB1 and attb2 sequences, and can be used for recombination with a vector carrying the attP1 and atP2 sequences, and the addition of the BP clonase enzyme mix. .