Please enable JavaScript.
Coggle requires JavaScript to display documents.
3.14 Variation & inheritance - Coggle Diagram
3.14 Variation & inheritance
definition
a.variation
differences between individuals of the same species
ex: height, weight ,eye and hair colour, shape of nose, language, & skills (individual variation)
b.Inheritance :
transmission of genetic information from generation to generation
tendency develop disease (cystic fibrosis) & skin colour :inherited (hereditary caharacteristics)
caused by genetics
study of inherited
passed on from 1 generation to another
c. acquired characteristics :cannot be inherited
ex:scar
Sexual reproduction & inheritance
cell division (meiosis) ---> form gametes
cell division ( mitosis) ---> occur during zygote
3.cell division (nucleus)
chromosome
b. thread-like structures of DNA, (double helix structure)
c.carrying genetic information in the form of genes
gene: short length of DNA found on a chromosome that codes for a specific protein ex: collagen
a.located at nucleus
d. human cells : 46 chromosome (23 pairs) --> diploid , haploid?
genetic information provide particular characteristics cell
section of chromosome transfer 1 cell -->1 cell
damage ---> change in characteristics
swell : produce protein
nuclei male VS nuclei female : male (XX) & female (XY)