Definition of Dominant and Recessive Gene
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Hayes, N., & Orell, S. (1993). Psychology, An Introduction. London: Longman Group UK Limited
Genetics transmission:
Acquisition of characteristics by inheritance.
Each cell in body contains nucleus which contains DNA.
DNA is organized into long strands called chromosomes.
Chromosome is made up of smaller units of DNA that is genes.
Genes carry information on biological development of the body.
Set of Chromosomes number:
23 pairs of chromosomes for each species, 46 altogether.
Half of the inherited chromes are from the mother and the other matching half are from the father.
Combination produced a full set, named embryo to be biologically developed
Assuming that the environment is all right
Because we inherit two different sets of chromosome from our parents, we have a mechanism for ‘sorting out’ the two messages when they contradict each other. Some genes will tend to be dominant over the other genes, while some tend to be recessive.
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Crooks, R. L., & Stein, J. (1998) Psychology, Science, Behavior, and Life. USA: Saunders College Publishing
Mechanisms of Heredity
Chromosomes composed by thousands of genes, the chemical blueprints of all living things.
Gene :
1. determiner for physical traits (eye color, blood type, bone structure)
2. impact behavioral traits (intelligence, temperament, and sociability)
Made of DNA molecules, looking like a long double strand arranged in a spiraling staircase fashion.
DNA composed of the same chemical bases, but the exact arrangement of chemicals varied, causing diff DNA to have diff effects.
Dominance and Recessiveness
Ali might have received a gene for brown eyes from one parent and a gene for blue eyes from the other.
It’s the principles of dominance and recessiveness would allow us to predict that the actual color of Ali’s eyes would be brown because genes for brown eyes are dominant over blue eye genes.
Dominant
Hayes, N., & Orell, S. (1993). Psychology, An Introduction. London: Longman Group UK Limited
Genetics transmission:
Acquisition of characteristics by inheritance.
Each cell in body contains nucleus which contains DNA.
DNA is organized into long strands called chromosomes.
Chromosome is made up of smaller units of DNA that is genes.
Genes carry information on biological development of the body.
Set of Chromosomes number:
23 pairs of chromosomes for each species, 46 altogether.
Half of the inherited chromes are from the mother and the other matching half are from the father.
Combination produced a full set, named embryo to be biologically developed
Assuming that the environment is all right
Because we inherit two different sets of chromosome from our parents, we have a mechanism for ‘sorting out’ the two messages when they contradict each other. Some genes will tend to be dominant over the other genes, while some tend to be recessive.
DSC 0211-0221
Crooks, R. L., & Stein, J. (1998) Psychology, Science, Behavior, and Life. USA: Saunders College Publishing
Mechanisms of Heredity
Chromosomes composed by thousands of genes, the chemical blueprints of all living things.
Gene :
1. determiner for physical traits (eye color, blood type, bone structure)
2. impact behavioral traits (intelligence, temperament, and sociability)
Made of DNA molecules, looking like a long double strand arranged in a spiraling staircase fashion.
DNA composed of the same chemical bases, but the exact arrangement of chemicals varied, causing diff DNA to have diff effects.
Dominance and Recessiveness
Ali might have received a gene for brown eyes from one parent and a gene for blue eyes from the other.
It’s the principles of dominance and recessiveness would allow us to predict that the actual color of Ali’s eyes would be brown because genes for brown eyes are dominant over blue eye genes.
Dominant