Plays a significant role in a person's mental ability, e.g. education, SES, nutrition, parents' behavior, alcohol use, criminal behavior, emotional adaptation, amount of time spent reading or even watching television (Flynn, 1992)
Sex Linked chromosomal disorder: The disorder occurs on chromosome pair #23 or the sex chromosomes
Turner syndrome is caused when all or part of one od the X chromosomes is lost before or soon after conception due to a random event
klinefelter Syndrom is caused when an extra X chromosome is present in the cells of a male due to a random event.
Huntington's Disease (heterozygous) is a condition that affects an individual's nervous system. The disease affects movement, behavior, and cognition
Touretter syndrome (heterozygous) is a tic disorder which results in uncontrollable motor and vocal ticks as well as the body.
Achondroplasia (heterozygous) fingersis the most common form of disproportionate short stature. Abnormal bone growth resulting in short stature, disproportionately short arms and legs, short finger, a large head, and specific facial features
GenotypeEnvironmentCorrelations
refer to the processes by which genetic
factors contribute to variations in the
environment (Plomin, DeFries, Knopik, &
Niederhiser, 2013).
After five days of mitosis, there are 100 cells, which is now called a blastocyst
Cephalocaudal development from head to tail
Proximodistal development from midline outward
Teratology: a study of factors that contribute to congenital disabilities
Alcohol is one of the most commonly used teratogens, followed by Tobacco
Genes are segments of chromosomes that vary in length