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The Greatest Mass Extinction of All Time Occurred at the End

question 28

Multiple Choice

The greatest mass extinction of all time occurred at the end of the ____ era, in which more than 90% of all existing marine organisms became extinct.


Definitions:

Heterozygous

A genetic condition in which an individual has two different alleles of a gene, one inherited from each parent, contributing to genetic diversity.

Hereditary Transmission

The process by which genetic information is passed from parents to their offspring, determining inherited traits.

Genes

Units of heredity made up of DNA that act as instructions to make molecules called proteins, influencing how organisms develop and function.

Chromosomes

Thread-like structures located inside the nucleus of animal and plant cells, made of protein and a single molecule of deoxyribonucleic acid (DNA), carrying genetic information.

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