#Question id: 5717
#Unit 8. Inheritance Biology
Following homologous chromosome is a heterozygous for inversion
Following some statement regarding above abnormality is correct?
A. During meiosis, one chromosome twists once at the ends of the inversion to pair with the other untwisted chromosome
B. Crossing-over within the inversion loop at meiosis connects homologous centromeres in a dicentric bridge.
C. Tension eventually breaks the dicentric bridge, forming two chromosomes with terminal deletions.
D. the RF is zero among genes within the inversion region
#Question id: 2975
#Unit 2. Cellular Organization
Following statements are regarding to the Surveillance mechanisms in cell cycle regulation.
A. Surveillance mechanisms known as checkpoint pathways establish dependencies among cell cycle events and ensure that the next cell cycle event does not occur prior to the completion of a preceding event.
B. In response to DNA damage, two related protein kinases, ATM and ATR, are recruited to the site of the damage, where they activate signaling pathways that lead to cell cycle arrest, repair, and under some circumstances, apoptosis.
C. The spindle assembly checkpoint pathway, which causes initiation of anaphase, utilizes Mad2 and other proteins to regulate APC/CCdc20, which targets securing and mitotic cyclins for ubiquitinylation.
D. The spindle position checkpoint pathway prevents mitotic CDK inactivation when the spindle is mispositioned. In this pathway, localized activators and inhibitors and a sensor that shuttles between them allow cells to sense spindle position.
Which of the following statement is incorrect?
#Question id: 12741
#Unit 13. Methods in Biology
#Question id: 314
#Unit 1. Molecules and their Interaction Relevant to Biology
Which statement explains the cleaning action of soap on greasy dishes?
#Question id: 2944
#Unit 2. Cellular Organization
DNA replication at each origin occurs only once during the cell cycle because of: