The Origin of Angiosperms

question 112

Multiple Choice

The origin of angiosperms

• A) has been established from the fossil record.
• B) remains a mystery.
• C) has been established from molecular and morphological evidence.
• D) is likely to have involved plants in the magnolia family.
• E) is likely to have involved gnetophytes.

---

Definitions:

Mismatch Repair

A cellular mechanism that corrects DNA replication errors by removing and replacing incorrectly paired nucleotides.

Incorrectly-Paired Nucleotides

Mismatched pairs of nucleotides that occur during DNA replication or repair, potentially leading to mutations.

Telomeres

The protective caps at the end of chromosomes that prevent the genome from deteriorating or fusing with neighboring chromosomes.

Chromosomes

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