JDBC, JAVA SERVER PAGES, AND MYSQL QUIZ

How many chromosomes are there in Caernorhabditis elegans?

3

12

6

9

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Which of the following denotes a pair of contrasting characters?

Alleles

Homozygous

Genotype

Phenotype

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A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as

chromogram

karyogram

idiogram

zymogram

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Incase of inversion when the inverted segment of chromosome includes centromere, it is known as

paracentric inversion

pericentric inversion

double inversion

inverted inversion

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In an organism, the chromosome number is maintained constant because of

crossing over

synapsis

independent assortment

DNA duplication

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Diethyl stilbestrol (DES), a synthetic estrogen causes

disruption of mitotic spindle

chromosome lagging

centriole elongation

All of these

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If two genes show 50% recombination

both (a) and (b)

they are closely located on the same chromosome

they are on same chromosome but far apart

they are on different chromosomes

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An odd number of cross overs in inverted region will result into formation of a dicentric chromatid and acentric chromatid at anaphase I incase of

paracentric inversion

double inversion

pericentric inversion

none of these

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In a dihybrid cross, the progeny of an Fl individual (hetero2ygous for both characters) will show a phenotypic ratio of

1:2:2:1

3:1:1:3

9:3:3:1

1:1:1:1

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How does dosage compensation in Drosophila occur?

Hypertranscription of male X chromosome

Chimerism

Hypotranscription of female X chromosome

X inactivation in females

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