Sex Determination

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Sex Determination: Overview

This Topic covers sub-topics such as Mutation, Down’s Syndrome, Aneuploidy, Structural Changes in Chromosomes, Numerical Changes in Chromosome and, Sex Determination in Humans

Important Questions on Sex Determination

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Discontinuous variations are

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Translocation involves the exchange of parts between two homologous chromosomes to form new chromosomes. 

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_____ involves the rotation of chromosomes or a set of genes.

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Structural changes in the chromosomes usually occurs due to errors in cell cycle.

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Turner syndrome is an example of _____.

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_____ chromosomal composition of nullisomy.

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Down's syndrome is associated with a defect in which chromosome?

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Organisms having more than two normal sets of chromosomes (2n) are called monoploids. 

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What is the most common cause of aneuploidy?

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In humans, women have a perfect pair of sex chromosomes, both called _____.

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What is Down-syndrome?

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Which of the following disease is caused due to a change in the number of autosomes?

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Which scientist gave the theory of mutation?

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Which among males and females are homogametic?

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A person A has only B chromosomes in all its gametes. On the other hand, another person C has chromosome D in half of gametes and chromosome E in the other half of gametes. When chromosomes B and D combine during fertilization, a female zygote results. On the other hand, combination of B and E chromosomes produces a male zygote.
Out of the two persons A and C, which one is male?

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Congenital analgesia is a type of mutation in which a person _________.

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In a small town in Argentina, people have developed resistance to poison by drinking water that contains _____ level of arsenic required to kill a person.

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Which gene is responsible for sleeping mutation?

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Which enzyme is responsible for sealing the DNA strand?

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A system for recognizing and repairing errors in DNA replication and recombination is called _________.