PPT-Double Haploid Application to Allelic Diversity

Germplasm Mike Blanco amp Andrew Smelser USDAARS Plant Introduction Research Unit Original Allelic Diversity Goals Develop an unmatched collection of rare maize alleles Develop 15001800 inbreds. Dr. Brent Hulke. Research Geneticist. Tools available/under development. Germplasm Resources. SNPs/genomic resources. Doubled Haploid. Evolution of the term “conventional breeding”. Germplasm Resources. Meiosis. Meiosis occurs in sexual reproduction when a diploid germ cell produces four haploid daughter cells that can mature to become gametes (sperm or egg).. Meiosis. . Goal: reduce genetic material by half. – so many options. Impacts of . Ploidy. Changes. Changes in chromosome number and structure can have major health impacts e.g. trisomy 21. Polyploidy in cultivated and domesticated plants is widespread and of evolutionary and economic importance. Larry Bull. UWE. Larry Bull. UWE. SEX. . A Social Interaction in Complex Intelligent Systems . Evolutionary Computing. F = . f. (A). F’ = . f. (A’). Nature. Hug et al. (2016) A new view of the tree of life. . Impacts of . Ploidy. Changes. Changes in chromosome number and structure can have major health impacts e.g. trisomy 21. Polyploidy in cultivated and domesticated plants is widespread and of evolutionary and economic importance. Types. of Reproduction. Advantages. Disadvantages. Sexual. Asexual. Allows for genetic . variation. Can result in better species. Requires . partner. Does not . require. . partner. Generally . faster. th. , 2017. Pre-Class:. Briefly. summarize the events of the six steps of mitosis/cytokinesis.. . Expect . the Wheel of Doom!. Have your free response questions ready but . don’t. discuss them.. 03/26/15. Interactions (4C), . using the . Fto. (purple) or Irx3 (blue) promoter as a viewpoint. The locus is displayed around the inner circle, the interaction are displayed as lines (darker lines symbolizing greater significance), and interactions above background are shown on the outer circles. (Figure 1a, taken from . Samantha Bonilla. Vocabulary. •. Karyotype. . •. Somatic cell. •. . Life cycle. •. . Homologous chromosome. •. . S. ex chromosome. •. . Autosome. •. . Diploid cell. •. . Haploid cell. Vocabulary. Somatic Cell. Gamete. Homologous Chromosomes. Diploid Cells ( 2n ). Haploid Cells ( n ). Normal body cell. Sex cell – sperm or egg. Matching pairs of chromosomes. Cells that have homologous chromosomes (somatic cells). The main characteristics of . Phaeophyta. . are:. 1- . Cell construction:. . cellulose fibers . bound with . Alginic. . acid . , . Fucoidan. . . form . cell walls.. 2- Food reserves:. . laminarin. Telophase I and Cytokinesis Prophase II Metaphase II Anaphase II Telophase II and Cytokinesis Centrosome (with centriole pair) Sister chromatids Chiasmata Spindle Fragments of nuclear envelope Centrom Odd populations Deer at Seneca Army DepotCheetah Zosteropslateralis (example of sampling error)Clegg et al Founder EffectWhat happens when a small number of individuals start a new populations?Can res 052 haploid Maize (Zea mays) breeding technology Science, Bako National Maize Research Center, Ethiopia Takele Mitiku, Ethiopian Insti-tute of Agricultural Research, Ambo University Depart- : https://