Heredity And Environment
The modern science of genetics started with the work of Gregor Mendel. He found that a Some Relationship Between Heredity And Environment. Organisms. Study 7 4 understanding the relationship between heredity and environment flashcards from valaree g. on StudyBlue. Discover the interrelationship between heredity and the environment in the human growth and development. It is often difficult to separate the.
What is the difference between heredity and environment?
Environment includes all the extrinsic forces, influences and conditions which affect the life, nature, behaviour, the growth, development and maturation of living organism Douglass and Holland. Hence, we can say that environment means all that is found around the individual.
The cytoplasm is an intracellular environment which influences the development. Though the life begins with single cell, in the process of cell division several new cells are formed and a new internal environment comes into existence. As the fetus develops the endocrine glands are formed.
The hormonal secretion by these glands gives rise to another intracellular environment. Hormones are necessary for normal development, but defects in hormone secretion like over or under secretion may lead to congenital deformities.
Discover the interrelationship between heredity and the envi by jhon rugil israel on Prezi
The growing embryo is surrounded by amniotic fluid in the uterus which creates another environment. This fluid will provide the necessary warmth and protection against the dangers due to organisms and other chemical effects on fetus. The fetus is also connected to the mother by the umbilical cord, through which the nourishment is supplied.
- Nature Versus Nurture:
- Heredity And Environment
Sufficient nourishment is necessary from the mother. Otherwise the child will suffer from malnutrition.
The defects in mother like drug or alcohol addiction, smoking, malnutrition, diabetes, endocrinal disturbances, small uterus and such other problems cause many problems in child.
The psychological state of mother like over excitement, depression also may cause damaging effect on the child. After nine months, the child is born and enters a new environment which is entirely different. A new life begins in a new environment. This new environment will have a different culture, ideology, values, etc. The home atmosphere, parental love and affection, association with sibling, neighbours, peers, teachers, etc.
Thus it is clear that the theory of nurturing a child is one of the most important facts of shaping a child. It is shown in this article because of the outcome of the child how he first is like a savage animal, and then later tamed, but even a tamed animals go on rampages, just like the Wild Boy.
As the 19th century progressed, the problem of the relationship between mind and brain The environment did not Each person inherits two copies of the ALDH3 gene, one from the father and Similarities between identical and For example, Japanese-Americans are on the average taller and heavier than their second cousins who grew up in Japan, reflecting the effect of environmental variables, especially dietary differences.
Phenylketonuria PKU is an excellent example of environmental modification of a genetically controlled effect. The enzyme that breaks down phenylalanine is defective, so it accumulates and breaks down abnormally.
Effects of Heredity and Environment on our Personality
So in PKU, a single gene can dramatically affect behavior: But the effect of that defective gene expression depends on the environment in which it occurs. When this abnormal metabolism of phenylalanine was discovered, an effective treatment became available: The abnormal gene is still there, but because little phenylalanine is present in the diet, little toxic effects result.
This defective gene was no longer expressed in mental retardation, because the environment was different: The treatment for PKU illustrates the principle that the way a gene is expressed depends on the environment in which it is expressed.