Chapter 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| genotype | the complete set of genes that makes up a person's heredity
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| phenotype | genetic instructions along with environmental influences
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| pku | recessive disease babies lack liver enzyme which converts phenyalaline...poison..mental retardation
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| huntingtons disease | dominant disease carried on chromosome 4
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| down syndrome | have an extra 21st chromosome cuased by the egg
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| klinefelter's syndrome | XXY tall, small testicles, sterile, below normal intellgience
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| XXY Complement | xyy Tall with below normal intelligence
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| TURNER'S SYNDROME | x limited sex development, problems perceiving spacial relations
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| xxx syndrome | motor and language development problems
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| polygenic inheritance | phenotypes reflect the combined activity of many genes
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| reaction range | when the same genotype produces a range of phenotypes depending on the environment
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| niche picking | seeking environments based on heredity
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| nonshared environmental influences | forces within a family that make children different
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| Zygote | Weeks 1-2 fertilized egg,
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| germ disc | small cluster of cells near center of zygote becomes the baby
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| amnion | sac the embryo rests in
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| amniotic fluid | cushions embryo and maintains temp
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| umbilical cord | houses blood vessels that join embryo and placenta
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| ectoderm | hair outer layer
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| mesoderm | middle forms muscles bones and circulatory system
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| endoderm | inner forms digestive sytem and lungs
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| cephalocaudal principle | head to spine
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| proximodistal principle | inner to outer
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| month 5-6 | eyebrows eyelashes and hair, vernix
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| vernix | greasy substance protects fetus in amniotic fluid
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| month three | males develop testes and females ovaries third month testes tell cells to be penis in female the hormone is absent making a vagina
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| age of viability | weeks 22-28 a baby has a chance at survival
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| spina bifida | when a mother does not consume enought folic acid the embryos neural tube does not close properly
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| thalidomide | babies born with deformed limbs
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| fetal alcohol syndrome | thin upper lip short nose widly spaced eyes mental retardation and slow growth
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| amniocentis | needle through stomach is inserted into amniotic fluid, takes 3 weeks for results
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| chorionic villi testing | tissue obtained from placenta through the vagina, done at 8-9 weeks quick results
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| hypoxia | pinched umbilical cord-baby does not receive enough oxygen
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| hypoxia | pinched umbilical cord-baby does not receive enough oxygen
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| low bith weight | weighs less than 2500 grams, 5.5 pounds
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| very low bith weight | weighs less than 1500 grams or 3.3 pounds
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| low bith weight | weighs less than 2500 grams, 5.5 pounds
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| extremely low birth weight | less than 1000 grams or 2.2 pounds
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| extremely low birth weight | less than 1000 grams or 2.2 pounds
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| very low birth weight | less than 1500 grams 3.3 pounds
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| extremely low birth weight | less than 1000 grams or 2.2 pounds
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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