In Humans, Identical Twins Are Possible Because

question 82

Multiple Choice

In humans, identical twins are possible because

• A)of the heterogeneous distribution of cytoplasmic determinants in unfertilized eggs.
• B)of interactions between extraembryonic cells and the zygote nucleus.
• C)of convergent extension.
• D)early blastomeres can form a complete embryo if isolated.
• E)the grey crescent divides the dorsal-ventral axis into new cells.

---

Definitions:

Christian Values

Moral and ethical codes of conduct derived from Christian teachings.

United States Information Agency

A government agency responsible for disseminating pro-American propaganda and information abroad during the Cold War era.

Rock 'n Roll

A genre of popular music that originated in the United States in the late 1940s and early 1950s, characterized by a strong rhythm, simple melodies, and often themes of teenage love and rebellion.

NAACP

The National Association for the Advancement of Colored People, an organization founded in 1909 to fight for civil rights and to eliminate race-based discrimination.