Scientists,looking at the Range of Beak Shapes and Sizes Across

question 16

Multiple Choice

Scientists,looking at the range of beak shapes and sizes across different finch species,observed that the thicker beak expressed a gene known as BMP4 early in development.To verify that the BMP4 gene itself could trigger the growth of bigger beaks,researchers increased the production of BMP4 in the developing beaks of chicken embryos.Which of the following results would explain why BMP4-treated chicks began growing wider,taller beaks?

• A)Change to the genome induces radical changes in form.
• B)New genes arise every time a new species arises.
• C)Development cannot change morphology.
• D)BMP4 is a homeotic gene.

---

Definitions:

Deinstitutionalization

The process of replacing long-stay psychiatric hospitals with less isolated community mental health services for those diagnosed with a mental disorder or developmental disability.

Mental Illness

A broad spectrum of psychiatric disorders impacting one's emotions, cognitive functions, and patterns of action.

Homelessness

A condition where an individual lacks stable, safe, and adequate housing.

Martin Seligman

A renowned psychologist recognized for his contributions to the study of learned helplessness, the field of positive psychology, and the concept of well-being.