When will the babies be fraternal twins?
Two sperm unite with two eggs at the same time and make two zygotes
An infant received from his mother's genes a condition called hemophilia which makes it difficult for him to stop bleeding when he is injured. Which influence on development is this?
Heredity
An infant whose mother had x-rays during pregnancy was diagnosed with cancer. Which influence on development is this?
Environment
A preschooler's mother was exposed to cats during her pregnancy and the child has taxoplasmosis. Which influence on development is this?
Environment
Thomas' mother had chicken pox during the first six months of her pregnancy Thomas has scarring of the skin a limb defect and eye problems. Which influence on development is this?
environment
When does a baby have sickle cell anemia?
When he/she receives defective recessive genes from both parents
When is a baby MOST LIKELY to have fetal alcohol syndrome?
When he/she has been exposed to harmful substances
When is a baby likely to have Tay-Sachs disease?
When he/she receives defective recessive genes from both parents
Which is an example of a hereditary influence on development?
Mike's body does not process fats in the brain and nerve cells because he has Tay Sachs disease
Which is an example of a hereditary influence on development?
Robert's father had weak muscles as a result of muscular dystrophy, and Robert has the same problem
Which is an example of an environmental influence on development?
Doug drank alcohol and it caused his child to have fetal alcohol syndrome
Which is an example of an environmental influence on development?
Larry's mother was exposed to German measles and Larry is blind
Which is an example of an environmental influence on development?
Opal was exposed to lead paint and her baby was born mentally disabled.
Which is an example of an environmental influence on development?
Stacy's mother smoked during pregnancy; Stacy was born prematurely and was very small.
Which is an example of a birth defect resulting from both hereditary and environmental influences?
One year old Mary has an incomplete spinal cord due to lack of folic acid and an inherited gene.
An infant has a birth defect because the mother smoked during pregnancy. Which influence on development is this?
Environment
Which is an example of a hereditary influence on development?
Brenda was born with cystic fibrosis.
Which is an example of a birth defect that has both hereditary and environmental influences?
Troy has a large hole in his lip from cleft lip
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