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).
They require moisture is a common feature of all protists
<u>Explanation:</u>
Protists are categorized based on how they eat, how they move and how similar they are to the other eukaryotic kingdoms. Protists are single-celled almost. One can speculate regarding protists as all eukaryotic organisms that are not animals, neither plants not a fungus. They also may seek for food like an animal or photosynthesize like a plant.
Protists are organisms that need moisture to live. They mostly live in aquatic habitats, though they may also grow in moist tree trunks and soil, among other environments. Protists also go through periods of sexual or asexual reproduction, based on their species or seldom their environmental situations.
Globalization is the process of interaction and integration among people, companies, and governments worldwide. It is the growing interdependence of the world's economies, cultures, and populations, brought about by cross-border trade in goods and services, technology, and flows of investment, people, and information.
False- people do use chronology in day to day life
The answer you are looking for is Collagen.
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