is photographic memory a genetic trait?
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It depends on a slew of factors, including our genetics, brain development and experiences. It is difficult to disentangle memory abilities that appear early from those cultivated through interest and training.
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Today, psychologists recognize that both genetics and the environment play a role in determining intelligence. ... Twin studies suggest that between 40 and 80% of the variance in IQ is linked to genetics. This research suggests that genetics may play a larger role than environmental factors in determining individual IQ.
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The influence of genes on behavior has been well established in the scientific community. To a large extent, who we are and how we behave is a result of our genetic makeup. While genes do not determine behavior, they play a huge role in what we do and why we do it.
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Because it is genetic, taste is thus inherited based on the allele combination, or “to taste, or not to taste”. The ability is highlighted here; the ability to taste PTC shows a dominant pattern of inheritance. A single copy of a tasting allele (T) conveys the ability to taste PTC.
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Traits are basically your phenotype. They include things like hair color, height, and eye color. Alleles are versions of genes. They are what directly specify what traits you have.
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Human memory is notoriously unreliable, especially when it comes to details. Scientists have found that prompting an eyewitness to remember more can generate details that are outright false but that feel just as correct to the witness as actual memories. In day-to-day life, this isn't a bug; it's a feature.
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There is a similar phenomenon called eidetic memory that occurs in 2-10% of children. ... However, eidetic memories only last for a few minutes at most. While developing a photographic memory is impossible, you can train yourself to improve the memory you do have.
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One general view in the study of the evolution of behavior is that behaviors can have a genetic basis. This is not to say that all behaviors are genetically based; indeed many behaviors are entirely culturally transmitted or learned and may have little to do with genetics (why are you sitting in the same seat?).
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The "skip a generation" bit refers to gene expression, not actual DNA inherited. For example, a dark-haired person might possess the recessive gene for fair hair, and have children who are all dark-haired. ... That said, you get only approximately 25% of each of your grandparents DNA.
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Overall, genetics has more influence than parents do on shaping our personality. Molecular genetics is the study of which genes are associated with which personality traits. The largely unknown environmental influences, known as the nonshared environmental effects, have the largest impact on personality.
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We conclude that there is a greater perceptual resemblance between the voices of identical twins than between voices without genetic relationship. The identification however is not perfect. The voice pitch possibly contributes to the correct twin identifications.
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"Genotype" is an organism's full hereditary information, even if not expressed. "Phenotype" is an organism's actual observed properties, such as morphology, development, or behavior. ... The genotype represents its exact genetic makeup — the particular set of genes it possesses.
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So all in all the answer to your question is neither! Blonde hair, brown hair, blue eye, browns eyes … none of those traits are dominant or recessive as they are not due to a single gene.
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Fear, long thought to be a learned response, may actually be a partly inherited trait programmed into our genetic makeup, a study of twins has found.
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Several studies have indicated that LV mass is influenced by genetic factors. The substantial heritability (h2) for LV mass in population-based samples of varying ethnicity indicates robust genetic influences on LV hypertrophy.
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Genetic Factors: GAD may run in families. Just as a child can inherit parent's brown hair, green eyes and nearsightedness, a child can also inherit that parent's tendency toward excessive anxiety. Current research suggests that 1/3 of the risk of experienced GAD is genetic.
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Twin studies in adults have found that many aspects of brain anatomy are highly heritable, demonstrating that genetic factors provide a significant contribution to variation in brain structures. Less is known about the relative impact of genes and environment while the brain is actively developing.