You will determine your phenotype and try to determine your genotype for the traits listed below.
Religiosity Eye color Twin and adoption studies have their methodological limits. For example, both are limited to the range of environments and genes which they sample.
Almost all of these studies are conducted in Western, first-world countries, and therefore cannot be extrapolated globally to include poorer, non-western populations.
Additionally, both types of studies depend on particular assumptions, such as the equal environments assumption in the case of twin studies, and the lack of pre-adoptive effects in the case of adoption studies. Since the definition of "nature" in this context is tied to "heritability", the definition of "nurture" has necessarily become very wide, including any type of causality that is not heritable.
The term has thus moved away from its original connotation of "cultural influences" to include all effects of the environment, including; indeed, a substantial source of environmental input to human nature may arise from stochastic variations in prenatal development and is thus in no sense of the term "cultural".
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Individual development, even of highly heritable traits, such as eye color, depends on a range of environmental factors, from the other genes in the organism, to physical variables such as temperature, oxygen levels etc.
The variability of trait can be meaningfully spoken of as being due in certain proportions to genetic differences "nature"or environments "nurture". For highly penetrant Mendelian genetic disorders such as Huntington's disease virtually all the incidence of the disease is due to genetic differences.
Huntington's animal models live much longer or shorter lives depending on how they are cared for[ citation needed ].
At the other extreme, traits such as native language are environmentally determined: At a molecular level, genes interact with signals from other genes and from the environment.
While there are many thousands of single-gene-locus traits, so-called complex traits are due to the additive effects of many often hundreds of small gene effects. A good example of this is height, where variance appears to be spread across many hundreds of loci.
The "two buckets" view of heritability. More realistic "homogenous mudpie" view of heritability. Steven Pinker likewise described several examples: But traits that reflect the underlying talents and temperaments—how proficient with language a person is, how religious, how liberal or conservative—are partially heritable.
When traits are determined by a complex interaction of genotype and environment it is possible to measure the heritability of a trait within a population.
However, many non-scientists who encounter a report of a trait having a certain percentage heritability imagine non-interactional, additive contributions of genes and environment to the trait. As an analogy, some laypeople may think of the degree of a trait being made up of two "buckets," genes and environment, each able to hold a certain capacity of the trait.
But even for intermediate heritabilities, a trait is always shaped by both genetic dispositions and the environments in which people develop, merely with greater and lesser plasticities associated with these heritability measures.Nature, Nurture or an Interaction?
For the following examples, decide whether the situation is a result of nature, nurture, or an interaction of the two. Explain your reasoning. Height is another example of a trait that is influenced by nature and nurture interaction. A child might come from a family where everyone is tall, and he may have inherited these genes for height.
 The interactions of genes with environment, called gene–environment interactions, are another component of the nature–nurture debate. A classic example of gene–environment interaction is the ability of a diet low in the amino acid phenylalanine to partially suppress the genetic disease phenylketonuria.
What are some examples in various domains of development (such as emotional, language, cognitive, motor, etc.) where we can clearly see how the interaction between nature and nurture shapes development? Not just how nature and nurture affect different aspects of development, but the actual interaction of the two.
Nature, Nurture, or an Interaction Essay Sample For the following examples, decide whether the situation is a result of nature, nurture, or an interaction of the two. Explain your reasoning.
The sophistry of the "Nature versus Nurture" formulation is becoming ever more apparent as a consequence of the rapid advances in understanding of the basic mechanisms of heredity and in the application of this knowledge to a wide spectrum of issues of human health and welfare.