A Researcher Is Working with Mutant Mice That Demonstrate Defects

question 100

Multiple Choice

A researcher is working with mutant mice that demonstrate defects in the formation of connective tissue. These mice likely carry a mutation in a gene encoding what type of growth factor?

• A)fibrinogen growth factors (FGFs)
• B)bone morphogenetic proteins (BMPs)
• C)nerve growth factors (NGFs)
• D)neurotransmitters
• E)histamine

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Definitions:

Fetal Period

The stage of prenatal development that occurs from the end of the embryonic period to birth, characterized by rapid growth and maturation of bodily structures.

Major Organs

Essential organs in the body that perform vital functions necessary for survival, such as the heart, brain, liver, and kidneys.

Highly Active Fetuses

Fetuses that display above-average movement levels within the womb, which could indicate health and vitality.

Critical Periods

Specific times during development when certain skills or abilities are most easily learned, and the brain is especially sensitive to external influences.