IB DP Biology: HL复习笔记10.2.3 Gene Linkage
Exceptions to Mendel's Rules NOS: Mendel used observations of the natural world to find and explain patterns and trends Since Mendel, scientists have looked for discrepancies and asked questions ba...
Exceptions to Mendel's Rules NOS: Mendel used observations of the natural world to find and explain patterns and trends Since Mendel, scientists have looked for discrepancies and asked questions ba...
Predicting Phenotypic and Genotypic Ratios Worked Example Fruit flies (Drosophila melanogaster) were crossed in a laboratory study looking for inheritance patterns for two characteristics, wing len...
对于留学生来说,除了学校和专业之外,未来就业的情况也是择校的重要依据之一。从长远来看,选择一所好学校,不仅是看学校的学术实力,也要看学校能否给与你在毕业后相应的就业支持。此前QS发布了2022QS全球毕业...
Independent Assortment & Segregation Unlinked genes segregate independently as a result of meiosis Unlinked genes are genes that an organism carries on separate chromosomes Not on homologous co...
Drawing Chiasmata Skill: Drawing diagrams to show chiasmata formed by crossing over Drawing tips Use two coloured pens/pencils to show chromosomes/chromatids of maternal or paternal origin One chro...
Meiosis II Second division of Meiosis : Meiosis II There is no interphase between meiosis I and meiosis II so the DNA is not replicated The second division of meiosis is almost identical to the sta...
Meiosis I Homologous chromosomes separate in meiosis I Prophase I DNA has already replicated and condenses and becomes visible as chromosomes Each chromosome consists of two sister chromatids joine...
Crossing Over Crossing over is the exchange of DNA material between non-sister homologous chromatids Meiosis has several mechanisms that increase the genetic diversity of gametes produced Both cros...
Replication of Chromosomes Like mitosis, meiosis is preceded by DNA replication Like most other eukaryotic cells, gamete-producing cells perform a cell cycle Gamete-producing cells are found in the...
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