Answer:
True
Explanation:
Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.
The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.
<span>The nasal cavity opens into the nasopharynx through a connection known as the internal nares.</span>
Meiosis starts with one diploid cell (2n)
Meiosis has Two divisions
Produced 4 Unique haploid cells (n) (gametes)
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Answer:
Sustainable Living
Explanation:
An individual who pursues a lifestyle where he/she is concerned of using the resources in a limited quantity so the basic requirement of his/her is fulfilled along with preserving the remaining resources for the coming generation so that their basic requirements could be met, is following a sustainable living. Sustainable living is caring about the natural resources and making an attempt to save and preserve them.
Answer: Biodiversity is a measure of variation at the genetic, species, and ecosystem level.
Explanation: