Answer:
1. They must be removed before sister chromatids or homologous chromosomes can separate
Explanation:
During the S-phase of the cell cycle, not only does DNA have to be replicated, but also newly synthesized DNA molecules have to be connected with each other. This replicated DNA (sister chromatids) remain physically connected with each other from S phase until metaphase. This physical connection is called Sister chromatids cohesion.
Sister chromatid cohesion depends on COHESIN, a tripartite protein complex that forms a ring structure to hold sister chromatids together during mitosis and meiosis. Cohesin regulates the separation of sister chromatids during cell division, either mitosis or meiosis. This sister chromatid cohesion is essential for the biorientation of chromosomes on the mitotic or meiotic metaphase spindle, and is thus an essential prerequisite for chromosome segregation. Without the cohesion, sister chromatids would not be segregated symmetrically between the forming daughter cells, resulting in aneuploidy.
Cohesion is established during S-phase of DNA replication, and the cohesins hold the sister chromatid together after DNA replication until anaphase when the removal of cohesin leads to separation of sister chromatids (meiosis II and mitosis) and homologous chromosomes (meiosis I).
Answer: Mitochondria will be numerous in the heart muscle.
Explanation:
The heart muscle is the muscle that constitute the walls and tissue of the heart. It help to keep the heart pumping during involuntary movement. The heart muscle work hard and costumes alot of energy. The heart muscle have numerous of Mitochondria. Mitochondria is numerous in cells where there is high need of energy.
The Mitochondria is a membrane bound organelles that generate energy which is use by the cells for biological processes. Mitochondria help to generate energy.
D because during photosynthesis, glucose is what is made inside the plant.
It has very thick fur or hide so it cant be stung by bees's, except for its nose. Also its very resistant to Poison from snakes and scorpions. That would be my answer out of these 2 <span />
<span>Temperate Decidous Forest.. </span>
