AP Biologyeasymcq1 pt
Sister chromatids are
A.identical copies from one DNA replication
B.homologous chromosomes from different parents
C.nonhomologous chromosomes
D.fragments of broken DNA
Explanation
Core Concept
Sister chromatids are the replicated DNA molecules of one chromosome joined after S phase. They normally carry nearly identical sequence information, although rare replication errors, recombination-related events, or later mutations can create differences. During anaphase of mitosis, the sister chromatids separate and become individual chromosomes in the daughter cells.
Correct Answer
Aidentical copies from one DNA replication
More Unit 4: Cell Communication and Cell Cycle practice questions
- mediumWhich statement about the cell cycle's control system is correct?
- mediumA drug blocks adenylyl cyclase. Which signaling step is directly prevented?
- easyWhich type of molecule typically serves as the FIRST messenger?
- easyHow many daughter cells does one mitotic division produce?
- easyDensity-dependent inhibition refers to cells
Practice more AP Biology questions with full explanations
Practice Unit 4: Cell Communication and Cell Cycle Questions →