3.01 Birth Defects

Which is an example of an environmental influence on development?

• Susan and her mother both have PKU and cannot process protein

• Alisha has damage to her brain from cystic fibrosis

• Sydney was exposed to lead paint and her baby was born mentally disabled

When does a baby have sickle cell anemia?

• When he/she is born with 21 chroomosomes

• When he/she receives a defective dominant gene from the mother

• When he/she receives defective recessive genes from both parents

Which is an example of an environmental influence on develoment?

• Sarah's mother was exposed to German measles and now her son is blind.

• Kim has Down syndrome and a very happy personality

• Tyrell's body cannot process fats in the brain and nerve cells

Which is an example of a birth defect resulting from both hereditary and environmental influences?

• One-year-old Brittany has an incomplete spinal cord due to a lack of folic acid and an inherited gene

• Cindy has no way to use protein because of defective genes she inherited from her parents

• Angie has brain damage as a result of an auto accident before she was born

Thomas's 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?

• Heredity

• Environment

• Growth

An infant whose mother had x-rays during pregnancy was diagnosed with cancer. Which influence on develoment is this?

• Heredity

• Environment

• Growth

Which is an example of a hereditary influence on development?

• Kirk's mother had x-rays during pregnancy, and Kirk is blind and deaf

• Lilly's mother was exposed to lead paint while pregnant and Lilly is mentally challenged.

• Mike's body does not process fats in the brain and nerve cells because he has Tay-Sachs disease

When will babies be fraternal twins?

• An ovum unites with a sperm and then divides into two embryos

• Two sperm unite with two eggs at the same time and make two embryos

• An ovum unites with a sperm carrying a Y chromosome

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

• Devon's mother had Rubella causing Devon to be mentally disabled

• Shay was born addicted to drugs

Fetal alcohol syndrome may result in a child when:

• he/she has been exposed to alcohol while in the womb

• he/she is exposed to x-rays or other sources of radiation

• he/she receives a defective dominant gene from the father