Meiosis in Animal & Plant Cells Meiosis is a form of nuclear division that results in the production of haploid cells from diploid cells It produces gametes in plants and animals that ar...
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...
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...
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...
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...
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...
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...
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...
Edexcel IGCSE Maths 复习笔记 4.9.2 3D Pythagoras & SOHCAHTOA What are Pythagoras & SOHCAHTOA? Pythagoras’ Theorem helps us find missing side lengths of a right-angled triangle It is also fr...
