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15 Cards in this Set

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  • Back
Type I diabetes is an ________ disease, because the bodies own cells are perceived to be foreign and are destroyed by the immune system
autoimmune
Fetal alcohol syndrome is a _________ disorder, where the normal brain is altered by a prenatal exposure to alcohol.
developmental
For Fetal Alcohol syndrome, it appears that the greatest damage is done during the time most mothers do not know when they are __________.
pregnant
After an egg is fertilized by a sperm it forms a ______
zygote
The mixing of cells from two different fertilized eggs together will result in a mosaic creature known as a _______.
chimera
Children, nicknamed Snowflake Kids, are children who have been born from ______ embryos.
frozen
Any developmental biologist will assert that the most important event in your life is not birth, marriage, or death but it is _________ .
gastrulation
The frequency of conjoined twins is 1 in ________ births.
200,000
The _______ layer of the gastrula will go on to form the muscle, cartilage, and bone of the fetus.
mesoderm
Although many people feel that the birth of a child is a miracle, it is even more astounding when one considers the fact that over _____ percent of embryos are either unable to undergo gastrulation or fail to successfully execute it.
35
Fertilization in humans occurs in one of the females _________.
fallopian tubes
In 1997, , the cloning of a sheep named _______ provided proof that nuclear transfer of DNA also works in mammals.
Dolly
Spinal cord injuries are not treatable because cranial nerve cells in adult humans cannot ______ once they are injured.
regenerate
Scientists have found that there are a small group of genes known as the ______ genes which are responsible for directing the body pattern formation in all animals
homeobox
The simple round worm known as Caenorhabditis elegans is a great model organism to study development because it has less than _______ cells.
1,000