Edexcel IGCSE Biology 復習筆記 3.2.8 Natural Selection
Edexcel IGCSE Biology 復習筆記 3.2.8 Natural Selection Darwin's Theory of Evolution by Natural Selection Charles Darwin proposed the?theory of evolution by natural selection He came up with this th...
Edexcel IGCSE Biology 復習筆記 3.2.7 Mutation
Edexcel IGCSE Biology 復習筆記 3.2.7 Mutation Mutations Mutations are?rare,?random changes?that occur in the?sequence of DNA bases?in a gene or a chromosome Mutations occur?continuously As t...
Edexcel IGCSE Biology 復習筆記 3.2.6 Variation
Edexcel IGCSE Biology 復習筆記 3.2.6 Variation Types of Variation Variation is defined as?differences between individuals of the same species Variation can be divided into two types dependin...
Edexcel IGCSE Biology 復習筆記 3.2.5 Cell Division
Edexcel IGCSE Biology 復習筆記 3.2.5 Cell Division Mitosis Mitosis is defined as?nuclear division giving rise to genetically identical cells This type of cell division is used for?growth, re...
Edexcel IGCSE Biology 復習筆記 3.2.4 Predicting Genetic Inheritance
Edexcel IGCSE Biology 復習筆記 3.2.4 Predicting Genetic Inheritance Family Pedigrees Family pedigree diagrams are usually used to trace the?pattern of inheritance?of a specific characteristi...
Edexcel IGCSE Biology 復習筆記 3.2.3 Genetic Inheritance
Edexcel IGCSE Biology 復習筆記 3.2.3 Genetic Inheritance Key Definitions A?gene?is a short length of DNA found on a chromosome that codes for a particular?characteristic?(expressed by the fo...
Edexcel IGCSE Biology 復習筆記 3.2.2 Protein Synthesis
Edexcel IGCSE Biology 復習筆記 3.2.2 Protein Synthesis RNA Like DNA, the nucleic acid RNA (ribonucleic acid) is a?polynucleotide?– it is made up of many nucleotides linked together in a long...
Edexcel IGCSE Biology 復習筆記 3.2.1 DNA & the Genome
Edexcel IGCSE Biology 復習筆記 3.2.1 DNA & the Genome The Genome The?entire set of the genetic material?of an organism is known as its?genome In 2003, scientists completed a 13-year proj...
Edexcel IGCSE Biology 復習筆記 3.1.7 Human Sex Hormones
Edexcel IGCSE Biology 復習筆記 3.1.7 Human Sex Hormones Secondary Sexual Characteristics Primary sexual characteristics are present during development in the uterus and are the differences i...
