Chapt 5 - sakai

Chapt 5 - sakai - Chapter 5 Nature, Nurture, Human...

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Chapter 5 Nature, Nurture, Human Development
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Genes and Heredity __________ : Based on biological transmission of traits from one generation to next. __________ : Is the branch of biology that studies heredity. ___________________ - Rod shaped structures composed of genes that are found within the nucleus of the cells. _________ - Each chromos contains thousands of genes Humans have _________ chromosomes – ________pairs
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Figure 5.1 Figure 5.1 Genes are sections of chromosomes in the nuclei of cells
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Genetic Principles Genes If an individual receives one gene for ______ hair and another for _________ hair, that individual’s hair will be ________ . The gene for wavy hair is a ___________ gene. It is referred to as dominant. A single copy of the gene is sufficient to produce its effect. The same with ____ color. You must receive a gene for blue eyes from both parents in order to develop ______ eyes. The gene for blue eye color is a recessive gene.
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Segments within DNA consist of  genes  that make proteins to determine our  development. 
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TWINS TWINS : Twins are a form of ______ _______ in which the _________ gives birth to two ___________ from the same ___________, either of the same or opposite ____. How are the twins forms? A zygote (zi-goat) (the single cell) divides into 2 cells so that each develops into an individual with the same genetic makeup. We begin ______ as a single cell called zygote, that __________ again & again. Monozygotic , (mono-zie-got-ic) or ___________, twins develop from a single fertilized egg and have identical genes. derived from a _________ zygote that has split in two, resulting in 2 children that are genetically identical. Dyzygotic , (Die-zee-got-ic) or ___________, twins develop from two eggs and share only half of their genes, like any other sibling set. The _______ eggs form two zygotes. The sex chromosomes, called x and y, determines male (gets x from mother & y from father) or female (gets x from both parents).
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Fetal alcohol syndrome • FAS is characterized by ___________ growth of the head and body, facial, cranial and ear malformations, neurological damage, learning disabilities, and mental __________________. Figure 5.12a
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This note was uploaded on 02/05/2012 for the course 830 101 taught by Professor Brill during the Fall '08 term at Rutgers.

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Chapt 5 - sakai - Chapter 5 Nature, Nurture, Human...

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