IB DP Biology: HL复习笔记3.4.4 Cloning
Cloning Clones are groups of genetically identical organisms, derived from a single original parent cell A cloned cell is a cell that is genetically identical to the cell that it originated from Se...
IB DP Biology: HL复习笔记3.4.3 Genetic Modification
Genetic Modification Genetic modification is carried out by gene transfer between species Genetic modification is a term usually used to refer to the transfer of DNA sequences from one species to a...
IB DP Biology: HL复习笔记3.4.2 DNA Profiling
Use of DNA Profiling DNA profiling involves comparison of DNA DNA profiling (genetic fingerprinting) enables scientists to identify suspects for a crime and identify corpses because every person (a...
IB DP Biology: HL复习笔记3.4.1 Electrophoresis & PCR
Gel Electrophoresis Gel electrophoresis is used to separate proteins or fragments of DNA according to size Gel electrophoresis is a technique used widely in the analysis of DNA, RNA, and proteins D...
IB DP Biology: HL复习笔记3.3.5 Mutations & Disease
Causes of Mutations A mutation is a change in the sequence of base pairs in a DNA molecule They occur randomly and continuously to create new alleles of a gene Often only with a very small number o...
IB DP Biology: HL复习笔记3.3.4 Inheritance of Genetic Diseases
Causes of Genetic Disease A gene can affect a phenotype of an organism A gene codes for a single polypeptide The polypeptide affects the phenotype through a particular mechanism The phenotype of an...
IB DP Biology: HL复习笔记3.3.3 Skills: Inheritance
Constructing Punnett Grids A monohybrid trait is one that is controlled by only one gene Generally, we consider that such a gene has two alleles Either: one allele is dominant and the other is rece...
IB DP Biology: HL复习笔记3.3.2 Inheriting Alleles
Segregation of Alleles Meiosis is a form of nuclear division that results in the production of haploid cells from diploid cells During meiosis a diploid cell will divide twice to form four haploid ...
IB DP Biology: HL复习笔记3.3.1 Inheritance
Mendel's Experiments Gregor Mendel was an Austrian monk He was trained in mathematics and natural history at the University of Vienna In the mid-19th century, Mendel carried out breeding experiment...
