The Scarcity of What Isotope Is a Critical Test of the Density

question 104

Multiple Choice

The scarcity of what isotope is a critical test of the density of the present cosmos?

• A)carbon 14
• B)deuterium
• C)helium 3
• D)helium 4
• E)lithium 5

---

Definitions:

Genetic Equilibrium

A state in a population where allele frequencies remain constant over time, assuming no evolutionary influences.

Allele

Different versions of a gene, known as alleles, result from mutations and exist at the identical location on a chromosome.

Genotype Frequencies

The proportion of different genetic variants (genotypes) within a population.

New Alleles

New alleles are variations of genes that arise through mutations, providing a source for genetic diversity within populations.