Bio Lecture 16

Front 1

Type I diabetes is an ________ disease, because the bodies own cells are perceived to be foreign and are destroyed by the immune system

Back 1

autoimmune

Front 2

Fetal alcohol syndrome is a _________ disorder, where the normal brain is altered by a prenatal exposure to alcohol.

Back 2

developmental

Front 3

For Fetal Alcohol syndrome, it appears that the greatest damage is done during the time most mothers do not know when they are __________.

Back 3

pregnant

Front 4

After an egg is fertilized by a sperm it forms a ______

Back 4

zygote

Front 5

The mixing of cells from two different fertilized eggs together will result in a mosaic creature known as a _______.

Back 5

chimera

Front 6

Children, nicknamed Snowflake Kids, are children who have been born from ______ embryos.

Back 6

frozen

Front 7

Any developmental biologist will assert that the most important event in your life is not birth, marriage, or death but it is _________ .

Back 7

gastrulation

Front 8

The frequency of conjoined twins is 1 in ________ births.

Back 8

200,000

Front 9

The _______ layer of the gastrula will go on to form the muscle, cartilage, and bone of the fetus.

Back 9

mesoderm

Front 10

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.

Back 10

35

Front 11

Fertilization in humans occurs in one of the females _________.

Back 11

fallopian tubes

Front 12

In 1997, , the cloning of a sheep named _______ provided proof that nuclear transfer of DNA also works in mammals.

Back 12

Dolly

Front 13

Spinal cord injuries are not treatable because cranial nerve cells in adult humans cannot ______ once they are injured.

Back 13

regenerate

Front 14

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

Back 14

homeobox

Front 15

The simple round worm known as Caenorhabditis elegans is a great model organism to study development because it has less than _______ cells.

Back 15

1,000