What Insight Did Nettie Stevens's Studies of the Beetle Tenebrio

question 55

Multiple Choice

What insight did Nettie Stevens's studies of the beetle Tenebrio molitor provide about the chromosome theory of inheritance?

• A)Genes are located on chromosomes.
• B)The number of autosomal chromosomes varied between gametes.
• C)Crossing over occurs between homologous chromosomes.
• D)Sex is determined by the presence of an X or Y chromosome in the male gamete.
• E)Chromosomes assort independently into the haploid gametes.

---

Definitions:

Head Erect

An upright positioning of the head, typically used to improve breathing or digestion.

Vertebrae Straight

A condition or state where the vertebrae are aligned in a straight formation, avoiding abnormal curvature of the spine.

Body Alignment

The optimal placement of body parts so that the bones and joints are in correct anatomical position, minimizing strain and maximizing function.

Equilibrium

A state of physical balance or a condition where all competing influences are balanced.