W2D1 Flashcards
A recessive allele will only be expressed if _________
There is no dominant allele present.
What are the four embryo development stages?
Cell division, Cell migration, Cell differentiation, Cell death.
What was the procedure for the hearing test in the womb?
Mother read Cat In The Hat aloud 2x/day. Sucking in a certain way turned on a tape of the mother reading the book they heard in utero, or a new book.
What did we learn from the hearing in the womb test?
They can hear in the womb around the third trimester.
How did they figure out whether newborns could taste in the womb?
During the last month of pregnancy, mothers were randomly assigned to drink either water or carrot juice. They counted the number of negative faces the baby had eating the carrot juice.
What were the results of the taste in the womb test?
At 8 months gestation, fetuses form memories of tastes.
How did they figure out that fetuses could see?
They saw through an ultrasound that fetuses responded to light.
In which trimester are fetuses most sensitive to teratogens?
The first.
What is currently considered the most common human teratogen?
Alcohol.
Why was Wakefield’s paper revoked?
He made up the data, so cannot reproduce the results.
