ANIMAL BIOTECHNOLOGY CHROMOSOMES QUIZ

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

double inversion

pericentric inversion

paracentric inversion

inverted inversion

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Diethyl stilbestrol (DES), a synthetic estrogen causes

chromosome lagging

disruption of mitotic spindle

All of these

centriole elongation

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The degree or extent to which a given genotype is expressed phenotypically in a particular individual is defined as

environmental influence

expressivity

inheritance strength

penetrance

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How many chromosomes are there in the budding yeast (S. cerevisiae)?

18

16

17

20

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

3:1:1:3

1:1:1:1

9:3:3:1

1:2:2:1

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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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Bar eye character of Drosophila is due to

duplication in region of 16A of X chromosome

due to presence of additional X-chromosome

deletion in region of 16A of X chromosome

due to a point mutation in eye-locus

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Transmission of a gene from male parent to female child to male grand child is known as

maternal inheritance

quantitative inheritance

holandric inheritance

criss-cross inheritance

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Raphanobrassica is a classical example of

None of these

nullisomy

aneuploidy

allopolyploidy

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The percentage of individual with a given genotype, which exhibits the associated phenotype, is defined as

expressivity

environmental influence

inheritance percent

penetrance

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