Cleavage-Stage Cells Are Called ____; They Initially Form a Solid

question 13

Multiple Choice

Cleavage-stage cells are called ____; they initially form a solid ball or layer called a ____.

• A) morulas; blastomere
• B) blastocoels; blastomere
• C) blastomeres; morula
• D) blastomeres; blastula
• E) blastulas; blastocoel

---

Definitions:

Twin-Study Method

A research method used in genetics and psychology to determine the relative importance of genetic and environmental influences on individual traits and behaviors.

Methodological Problem

Issues or challenges related to the methods used in conducting research or experiments, often impacting the validity or reliability of results.

Genetic Influences

The effects of genes inherited from parents on an individual's traits, behaviors, and susceptibility to conditions.

Monozygotic Twins

Twins that originate from a single fertilized egg, resulting in individuals with identical genetic makeup.