When Does Recombination Occur

question 42

Multiple Choice

When does recombination occur?

• A)before DNA replication
• B)at the two-strand stage, when each member of a homologous chromosome pair is composed of two sister chromatids, and before DNA replication
• C)at the four-strand stage, when each member of a homologous chromosome pair is composed of two sister chromatids, and before DNA replication
• D)at the two-strand stage, when the sister chromatids have been separated, and after DNA replication
• E)at the four-strand stage, when each member of a homologous chromosome pair is composed of two sister chromatids, and after DNA replication

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Definitions:

Gas Hydrate

A crystalline solid formed from a mixture of water and gas, under low temperature and high pressure conditions, often found in marine sediments and permafrost regions.

Ocean-floor Sediments

Deposits that cover the ocean floor, comprised of particles of organic and inorganic origin, such as sand, silt, and the remains of marine organisms.

Fossil Fuels

Natural fuels formed from the remains of living organisms over millions of years, including coal, oil, and natural gas.

Sedimentary Rocks

Rocks formed by the accumulation and consolidation of sediment, which can include minerals and organic matter, typically found in layered deposits.