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Cards In This Set
| Front | Back |
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In a placental organism, which membrane provides the watery environment in which the embryo develops?
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Amnion
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When Gurdon transplanted the nucleus of an intestinal cell from a
tadpole into an egg cell whose nucleus had been destroyed, the egg
developed into a normal frog. This indicated that
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Each cell of an organism has all the genes needed for development.
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A woman is exposed to German measles during the second week of pregnancy. The chances of birth defects in the baby are
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High because the virus can cross the placenta and will damage fetal cells at this very sensitive stage of embryonic development.
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An animal that is hermaphroditic, such as an Earthworm
produces both |
Eggs and sperm
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A biochemical signal released from one organism which affect another organism.
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Pheromone
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A male could be rendered infertile, but not impotent, by
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Suppressing FSH but not LH.
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Sperm live approximately
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One or two days.
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The production of offspring from unfertilized eggs is called
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Parthenogenesis.
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What would happen to male hormone levels if his hypothalamus were to continually produce GnRH?
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LH, FSH, and testosterone levels would be high.
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In humans, implantation occurs
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When the embryo is blastocyst.
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The result of gastrulation is
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A three-layered embryo.
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Prior to ovulation, estrogen secretion causes
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increased secretion of GnRH.
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F each of the vas deferens of a male human were cut, his semen would not contain
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Sperm
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The hypthalomic hormone that is primarily responsible for the onset of puberty is
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Gonadotrophin releasing hormone (GnRH).
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Sexually transmitted diseases caused by viruses include herpes, AIDS and
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Genital warts.
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