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A snapshot of the summary - Psychobiologie selectietoets
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6.1 Visual coding
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What is the difference between the allele A and a of a gene?They are identical in most of their sequence and differ only at one or several nucleotides of the thousands of nucleotides that make up the gene
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When do DNA molecules replicate?During the S phase of cell division
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What are 3 ways by which a segment of SNA can be characterized and tracked?1. Direct sequencing (sequence alleles (A and a) in the parents and the meiotic products: the result would be that one half of the products would have the A DNA sequence and one half would have the a DNA sequence)
2. Restriction Fragment Lenght Polymorphism
3. PCR -
What is, at a molecular level, the primary phenotype of a gene?The protein it produces
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What is a null allele?A mutant allele that has no simalarities with the wild-type function (non functioning allele caused by a genetic mutation)
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6.1.1 General principles of percention
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When do you perceive an object?You perceive an object when it emits of reflects energy that stimulates receptors that transmit information to your brain
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In terms of which factors does your brain code information?In terms of which neuron respond, their amount of response and the timing of their response
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The law of specific nerve energiesWhatever excites a particular nerve esthablishes a special kind of energy unique to that nerve / the brain somehow interprets the action potentials from the auditory nerve as sounds etc.
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What does the 'amount of response' mean?How many action potentials a neuron sends per unit of time
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6.1.2 The eye and it´s connections to the brain
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What is the rear surface of the eye called which is lined with visual receptors?Retina
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