IB DP Biology: HL復(fù)習(xí)筆記10.3.1 Gene Pools
Gene Pools A gene pool consists of all the genes and their different alleles, present in an interbreeding?population Some populations of the same species are geographically isolated from each other...
IB DP Biology: HL復(fù)習(xí)筆記10.2.6 Variation
Types of Variation The ways in which organisms differ from one another is called?variation Variation occurs?between species In fact, species are classified based on differences between their respec...
IB DP Biology: HL復(fù)習(xí)筆記10.2.5 Skills: Chi-squared Test
Chi-squared Test and Dihybrid Crosses Use of a chi-squared test on data from dihybrid crosses The difference between?expected?and?observed?results in experiments can be statistically significant or...
esl課程與雅思對(duì)比
esl課程與雅思對(duì)比，一起來(lái)看看。ESL（English as a second language），該門(mén)考試的作用和我們更常聽(tīng)說(shuō)的雅思（IELTS）、托福（TOFEL）考試類(lèi)似，都是為非英語(yǔ)為母語(yǔ)的學(xué)生向?qū)W校提供一項(xiàng)英語(yǔ)語(yǔ)言能力的證明，用...
IB DP Biology: HL復(fù)習(xí)筆記10.2.4 Skills: Identifying Recombinants
Identifying Recombinants in Crosses Genetic diagrams involving autosomal linkage often predict solely?parental type?offspring (offspring that have the same combination of characteristics as their p...
IB DP Biology: HL復(fù)習(xí)筆記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...
IB DP Biology: HL復(fù)習(xí)筆記10.2.2 Skills: Analysing Dihybrid Crosses
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...
2022QS全球畢業(yè)生就業(yè)競(jìng)爭(zhēng)力排名發(fā)布！
對(duì)于留學(xué)生來(lái)說(shuō)，除了學(xué)校和專(zhuān)業(yè)之外，未來(lái)就業(yè)的情況也是擇校的重要依據(jù)之一。從長(zhǎng)遠(yuǎn)來(lái)看，選擇一所好學(xué)校，不僅是看學(xué)校的學(xué)術(shù)實(shí)力，也要看學(xué)校能否給與你在畢業(yè)后相應(yīng)的就業(yè)支持。此前QS發(fā)布了2022QS全球畢業(yè)...
IB DP Biology: HL復(fù)習(xí)筆記10.2.1 Unlinked Genes
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...
IB DP Biology: HL復(fù)習(xí)筆記10.1.5 Skills: Drawing Chiasmata
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...
IB DP Biology: HL復(fù)習(xí)筆記10.1.4 Meiosis II
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...
IB DP Biology: HL復(fù)習(xí)筆記10.1.3 Meiosis I
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...
