IB DP Biology: HL复习笔记3.2.2 Stages of Meiosis
DNA Replication before Meiosis Before meiosis occurs, all of the DNA inside the nucleus of the 'parent' cell is replicated This occurs during a period of the cell cycle known as interphase Once thi...
IB DP Biology: HL复习笔记3.2.1 Meiosis
Meiosis There are two processes by which the nucleus of a eukaryotic cell can divide. These are: Mitosis Meiosis Mitosis gives rise to genetically identical cells and is the type of cell division u...
IB DP Biology: HL复习笔记3.1.10 Skills: Using Databases
Use of Databases to Identify Gene Loci Use of databases to identify the locus of a human gene and its polypeptide product Following the sequencing of the whole human genome, we now know the exact l...
IB DP Biology: HL复习笔记3.1.9 Karyograms
Karyograms During the stages of mitosis, chromosomes condense (become visible) This is most notable in metaphase Staining can reveal distinctive banding patterns on chromosomes at this stage The po...
IB DP Biology: HL复习笔记3.1.8 Sex Determination
Sex Determination Sex is determined by an entire chromosome pair (as opposed to most other characteristics that are just determined by one or a number of genes) Females have the sex chromosomes (pa...
IB DP Biology: HL复习笔记3.1.7 Chromosome Number
Haploid Haploid nuclei have one chromosome of each pair Haploid cells contain one complete set of chromosomes (n) In other words, they have half the number of chromosomes compared to normal body ce...
2022上海中考成绩会提前公布吗？
2022上海中考成绩会提前公布吗？刚刚，上海市教委发布重要信息：鉴于本市新冠肺炎疫情防疫形势，取消名额分配现场综评，10分满分计入。同时，调整本市中招录取阶段日程安排，中考成绩由原定的8月20日提前至8月6日...
IB DP Biology: HL复习笔记3.1.6 Eukaryotic Chromosomes
Eukaryotic Chromosomes Chromosomes in eukaryotic cells are one, very long DNA molecule associated with proteins The main proteins present are the large, positively charged globular proteins called ...
IB DP Biology: HL复习笔记3.1.5 Prokaryotic Chromosomes
Prokaryotic Chromosomes The DNA in prokaryotic cells is significantly different from the DNA found in eukaryotic cells Prokaryotes do not contain a nucleus therefore the DNA is located in the cytop...
美国Top20-25院校解析！热门专业、录取数据、申请要求一网打尽！
今天，为各位同学整理了美国Top20-25院校的介绍。感兴趣的话，就赶快下拉阅读吧！ 点评 01处在 Hollywood, 所以艺术和电影方面的专业都是很出色的，毕业后也因学校的地点会提供很多的就业机会。 02洛杉矶是一个拥...
IB DP Biology: HL复习笔记3.1.4 Genome
Genome The total of all the genetic information in an organism is called the genome of the organism This is a complete set of genes present within every cell of an organism This includes all genes ...
IB DP Biology: HL复习笔记3.1.3 Mutation
Mutation A gene mutation is a change in the sequence of base pairs in a DNA molecule; this may result in a new allele Mutations occur all the time and at random There are certain points in the cell...
