inheritance terms to learn
Post on 04-Aug-2015
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INHERITANCE
Some important terms :
• Inheritance• Chromosome• Gene• Allele• Dominant gene• Recessive gene• Homogenous• Heterogenous• Phenotype• Genotype
Inheritance
• Passing on of characteristics from one generation to the next
Chromosome
• Long thread like structure in the nucleus of a cell.
Genes
• Small section of DNA coding for a particular character
Alleles
• Variation in a characteristic caused by different forms of a gene
In humans
Sex chromosomes
IN MALES IN FEMALES
Observe
• DOMINANT ALLELEThe character which is expressed Eg. Spotted coat in leopard
• RECESSIVE ALLELEThe character which is supressedEg. Black coat in black panther
HOMOZYGOUS
• An individual with two identical alleles for a gene
HETEROZYGOUS
• An individual with two different alleles for a gene
GENOTYPE
• The genetic makeup of an organism
PHENOTYPE
• The physical appearance of an organism
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