Each person's total DNA is divided into smaller parts, called ____.
How many PAIRS of chromosomes does an individual have in each cell of their body?
Because each individual has 23 chromosome pairs, this means that the total number of chromosomes they have is ____.
If you were to look into an egg cell or a sperm cell, you would find that the number of chromosomes was cut in half, meaning there would be only ____.
If a single egg cell splits and grows into two children instead of one, you get ____ twins.
____ twins have the same DNA, look the same, and are always the same sex.
Because identical twins have the same genes, any differences you observe in their thinking and behaving must be due to the ____.
____ studies help tell us the general degree to which a trait is genetically vs. environmentally determined.
___ ____ compare the degree to which the two members of a twin pair express a particular trait (e.g., intelligence).
Bob and Bill are identical twins. Bob is really smart, while Bill is as dumb as a brick. Because their genetics are exactly the same, we would suspect that the difference in their intelligence is due to something in the ____.
Phenylketonuria, intelligence, alcoholism, and personality were all examples I gave for genetics creating a ____ for a trait.
A genetic defect that makes it so you can't break down a common chemical (phenylalanine) found in food.
If a developing infant with phenylketonuria is placed on a normal diet containing phenylalanine, they will probably end up becoming mentally ____.
gene expression map
The point of the Allen Brain Atlas is to create a ____ ____ ____ of the brain.
Brain development and maintenance is not only determined by genetics, but also by brain cell ____, which results from living in an enriched environment.
Rats who are placed in isolation, with very little sensory stimulation or social interaction, develop brains that are ____ (smaller/larger) than rats placed in enriched environments.
If two eggs are released at the same time and are fertilized by two sperm, the resulting children will be ____ twins.
____ twins are no more similar than regular siblings, except for having been born at the same time.