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？
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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！
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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...
IB DP Biology: HL复习笔记3.1.2 Alleles
Alleles Eg. blood types A, B, AB and OEach allele results in a different variation of that trait A gene codes for a specific polypeptide that can affect a specific trait or characteristic in an org...
