Early Influences on Development - Prenatal Development

Question 1

This chromosomal abnormality is due to a deletion on the paternal chromosome 15. Symptoms can include distinctive physical features, flaccid muscles, developmental delays, overeating and obesity, hypogonadism, and obsessive-compulsive behavior.

Answer 1

Prader-Willi syndrome

Question 2

This chromosomal abnormality is due to a deletion on the maternal chromosome 15. Symptoms can include:

• microcephaly
• severe development delays
• communication difficulties
• stereotypic hand movements
• a tendency to be unnaturally happy

Answer 2

Angelman syndrome

Question 3

This chromosomal abnormality is due to the presence of an extra number 21 chromosome. Sxs include:

• Intellectual disability
• certain physical features
• Increased risk for heart abnormalities
• hypothyroidism

Answer 3

Down’s syndrome

Question 4

This chromosomal abnormality is due to the presence of two or more X chromosomes in males. Sxs can include:

• incomplete development of secondary sex characteristics and sterility
• long extremities
• language, learning, and Bx problems

Answer 4

Klinefelter syndrome

Question 5

Exposure to this teratogen, can result in the following Sxs:

• Low birth weights
• Impaired cognitions and delays
• Impulsivity
• Facial anomalies
• Impaired growth
• Physical defects

Answer 5

Alcohol

Question 6

Exposure to this teratogen, can result in the following Sxs:

• Spontaneous abortions
• Low birth weight/premature birth
• Over-reactivity to environmental stumuli
• Learning disabilities
• Impaired attention and memory
• Behavior problems

Answer 6

Cocaine

Question 7

The earliest age at which a baby can survive outside the womb is referred to as the age of viability. The age reported by different experts varies somewhat, but most agree that it’s between _____ and _____ weeks after conception.

Answer 7

22-26 weeks