Chapter 15 The chromosomal basis of inheritance Key ideas: 1) Mendelian Inheritance has its physical basis in the behavior of chromosomes during sexual life-cycle. 2) Morgan traced a gene to a specific chromosome. 3) Linked genes tend to be inherited together because they are located on the same gene. 4) Independent assortment of chromosomes and crossing over produce genetic recombinants. 5) Geneticists use recombination data to map a chromosome’s genetic locus. 1900 Biology finally
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Outline and evaluate the biological approach to abnormality? The biological or medical approach regards abnormality as illness or disease. Mental illness is thought to be related to the physical structure and functioning of the brain. There are four possible causal factors of abnormality: brain damage‚ infection‚ biochemistry and genes. The first factor is brain damage. Abnormal behaviour may occur if the structure of the brain is damaged in some way. Once disease or brain damage has caused mental
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Outline and Evaluate the biological approach to abnormality The biological approach sees abnormality as a physical illness and removes psychological blame and responsibility for the behaviour form the patients. Biochemistry; which is where abnormal functioning in the brain can be caused by abnormal levels of neurotransmitters and hormones. Neurotransmitters are the chemical messengers that allow neurones to communicate with one another at synapses. Hormones are chemical messengers that are secreted
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The Sexual Response Cycle Human sexual behavior or human sexual practice refers to the manner in which humans experience and express their sexuality. It encompass a wide range of activities such as strategies to find or attract partners (mating and display behavior)‚ interactions between individuals‚ physical or emotional intimacy‚ and sexual contact. Our minds and bodies can respond sexually to a variety of stimuli—including sight‚ sound‚ smell‚ touch‚ taste‚ movement‚ fantasy‚ and
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Outline and evaluate the behavioural approach to abnormality This approach focuses on the behaviour of the person to explain psychological abnormalities. It believes that the behaviour is learnt‚ and therefore can be unlearnt. It focuses on 3 different things: classical conditioning‚ operant conditioning and social learning theory. Classical conditioning was developed by Pavlov through his work on animals. He explained the development of abnormal behaviours through stimulus-response associations
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mono-zygotic twins in which one is normal and the other effected. In the affected twin their neurons are disorganized‚ compared with the unaffected twin whose neurons are organized. This supports the theory that mental illness is caused by structural abnormalities as the normal twin has a different brain structure to that of the affected twin and the only variable is the neurone structure‚ or holes in the hippocampus with the previous example. thus showing that there must be a link to the structure of the
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(a) Outline 2 attempts to define abnormality (6 marks) Statistical infrequency is an approach that attempts to define abnormality. It suggests that most human personality and behavioural traits fall within a normal distribution with most people crowding around the middle of the distribution (the norm). Any characteristic that is statistically rare according to this distribution is considered abnormal. A further attempt at defining abnormality is the deviation from ideal mental health approach.
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NORMALITY IS SIMPLY THE ABSENCE OF ABNORMALITY – DISCUSS. Life is complex and things do not always go smoothly. We are all troubled by major and minor tragedies. So why are some people‚ but not others‚ able to cope with life’s problems. What is abnormal behavior? Most of us would have a difficult time precisely specifying the differences between normal and abnormal behaviour. Some psychologists have argued that abnormal behaviour is culturally defined‚ and that behaviour that is considered evidence
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Genetic Abnormalities in Ancient Egyptian Royal Families It seems that throughout history‚ the words royalty and incest have gone hand in hand. Familial interbreeding occurred throughout a significant number of royal lines‚ including the British‚ Hawaiian‚ and Japanese thrones. However‚ none of these families‚ nor any other royal family for that matter‚ can match the profound rate at which the Egyptians practiced incest. Ancient Egyptian royal marriages were almost exclusively restricted to
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Describe and Evaluate one or more definitions of Abnormality One definition of Abnormality is deviation of Social Norms. Social norms are accepted ways of behaving within a society. They are the unwritten rules that members of a society regard as being normal and acceptable‚ and any deviation from them can be regarded as abnormal behaviour. Examples include ways of dressing‚ such as women wearing feminine clothing and men wearing masculine clothing‚ not appearing naked in public‚ saying ’please’
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