A Crystal with a Well-Defined Shape, Such as a Cube

question 69

Multiple Choice

A crystal with a well-defined shape, such as a cube, probably:

• A) does not reflect the arrangement of atoms in the lattice
• B) grew early and so was forced to grow around other minerals
• C) does not have a well-defined cleavage
• D) will react with dilute hydrochloric acid
• E) none of these

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Definitions:

Constancy

Refers to the psychological or physical stability or steadiness in a person or environment.

Monozygotic Twins

Identical twins that develop from a single fertilized egg, sharing identical genetic material.

Dizygotic Twins

Also known as fraternal twins, are siblings that develop from two different eggs fertilized by two different sperm, sharing about 50% of their DNA.

Concordance

In genetics, the presence of the same trait in both members of a pair of twins or in both members of a family, indicating genetic influence.