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Genetics
is the scientific study of genes and heredity
Heredity
refers to the passing of traits
Genes
are basic units of heredity
Deocyribonucleic Acid (DNA)
Genes are made of lengths of complex molecule called
DNA
carries the genetic code
Genotype
a person's unique set of genes
Phenotype
refers to the traits and qualities of an individual that come from the genotype
Variation
is the difference of the characteristics such as eye colour
Gregor Mendel
1866
Johann Friedrich Miescher
1869
Hugo de Vries
Carl Erich Correns
Harriet B. Creighton & Barbara McClintock
American Scientists
46
Chromosomes comes in pair and humanshave - chromosomes
23 pairs
How many pairs of chromosomes do humans have?
sex cells
chromosomes that form the 23rd pair are called
2 X chromosomes
female chromosomes
one X and Y chromosome
Male chromosomes
Chromosome 1
largest chromosome
Chromosomes
are made of DNA
Genes
are special units of chromosomal DNA
Chromosome
looks like a thread ans is coiled material
Genes
are special units of chromosomal DNA
Chromosome
looks like a thread and is coiled material
Centromere or primary constriction or kinetochore
is the primary constriction at the center to B which the chromatids or spindle fibers are attached.
Chromatid
during cell division
Chromatin
is a complex of DNA and proteins that forms
Telomere
is the terminal region of each side of the
Chromonema
is a threadlike coiled filamentous structure along
Matrix
Pellicle is the membrane
Sutton and Bover
suggested the role of chromosomes in heredity in 1902.
