ANIMAL BIOTECHNOLOGY CHROMOSOMES QUIZ

If two genes show 50% recombination

they are on different chromosomes

both (a) and (b)

they are closely located on the same chromosome

they are on same chromosome but far apart

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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

1:1:1:1

3:1:1:3

9:3:3:1

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Exchange of segments between non homologous chromosomes is best known as

crossing over

translocation

recombination

translation

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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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How many chromosomes are there in Caernorhabditis elegans?

9

6

12

3

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

17

16

20

18

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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

idiogram

zymogram

karyogram

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Hairy wing character of Drosophila is due to

duplication in region of chromosome

deletion in region of chromosome

due to presence of additional X-chromosome

due to a point mutation

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

environmental influence

penetrance

expressivity

inheritance strength

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