Define the term crossing over
Define the term crossing over? In what period of meiosis does this event take place?
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Crossing over is the eventual exchange of the chromosomal fragments among homologous chromosomes. The phenomenon takes place in prophase I whenever homologous chromosomes are paired. Crossing over is of huge importance for biodiversity and evolution and as it gives recombination of alleles (that is, of various genes) linked in similar chromosome throughout cell division by meiosis.
The netlike membranous complex of superposed flat scales with the vesicles shedding from the extremities seen in the electronic microscopy. What is observed structure? And also illustrate out its biological role?
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Web sites can log which of the below data from each and every site visitor?(i) The date the user visited the site (ii) The time (HHMMSS) the user visited the site (iii) The make and model of the PC the user is using (iv) The browser the user is
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The super ego represents societal and personal norms and serves as an ethical constraint on behavior. It can best be described as the conscience. The super ego provides norms to ego to determine what is wrong or right. However, a person is not aware of the working of the super ego, and cons
What do you mean by the antagonism between parasympathetic and the sympathetic neural actions?
As Compared to mammals, do birds absorb less or more water in their digestive system? Explain why this phenomenon is an adaptation to flight?
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Following are the Internal factors that Influence Perception: A. Characterstics of the Perceiver:1. Needs and motives2. Self-concept3. Beliefs4. Past experience5. Current psychological state6. Expectation B. Characteristics of the target or perc
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