AQA A Level Biology复习笔记4.3.3 Meiosis
Meiosis Meiosis produces daughter cells that are genetically different from each other and to the parent cell This is due to the processes of independent assortment and crossing over Indepen...
AQA A Level Biology复习笔记4.3.2 Mutations in Chromosome Number
Mutations in Chromosome Number Mutations can occur at different levels Non-disjunction occurs when chromosomes fail to separate during meiosis This occurs spontaneously The gametes ma...
AQA A Level Biology复习笔记4.2.6 Nucleic Acid & Amino Acid Sequence Comparison
Relating Nucleic Acid & Amino Acid Sequences A triplet is a sequence of three DNA bases that codes for a specific amino acid A codon is a sequence of three mRNA bases that codes for a sp...
AQA A Level Biology复习笔记4.2.5 Translation
Translation A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptide (prote...
AQA A Level Biology复习笔记4.2.4 Eukaryotic Transcription
Eukaryotic Transcription The genome within eukaryotic cells contains many non-coding sections Non-coding DNA can be found: Between genes, as non-coding multiple repeats Within genes, as intr...
AQA A Level Biology复习笔记4.2.3 Transcription
Transcription A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptide (pro...
AQA A Level Biology复习笔记4.2.2 The Structure of RNA
The Structure of mRNA and tRNA Like DNA, the nucleic acid RNA (ribonucleic acid) is a polynucleotide – it is made up of many nucleotides linked together in a long chain Like DNA, RNA nucleot...
AQA A Level Biology复习笔记4.1.7 Non-Coding DNA
Non-Coding DNA The genome within eukaryotic cells contains many non-coding sections of DNA Non-coding DNA does not code for any amino acids Non-coding DNA can be found between genes, ...
2023英国大学本土排名CUG TOP20院校A-Level成绩及雅思要求
6月14日，全英三大权威排名之一的完全大学指南CUG（Complete University Guide）发布了2023年英国大学排名榜单！作为专注于本土大学的英国榜单，此次排名共有130所大学上榜，涵盖了74个专业领域。 2023CUG排名亮...
