Cytogenetics Dihybrid Cross Online Exam Quiz

Cytogenetics Dihybrid Cross GK Quiz. Question and Answers related to Cytogenetics Dihybrid Cross. MCQ (Multiple Choice Questions with answers about Cytogenetics Dihybrid Cross

Considering a dihybrid cross, what is the probability of the progeny being heterozygous at both the alleles?

Options

A : 1/16

B : 4/16

C : 7/16

D : 9/16

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What will be the dyhybrid ratio for a cross between HH TT with hh tt?

Options

A : 1:2:1

B : 9:3:3:1

C : All same

D : 3:1

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By crossing homozygous short purple flowering parent with a heterozygous tall purple flowering parent you get 41 tall progeny. What will be the expected number of short progenies?

Options

A : 12

B : 42

C : 60

D : 80

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The expected phenotypic ratio obtained by crossing the F1 generation in dihybrid cross would be?

Options

A : 3:1

B : 1:2:1

C : 9:3:3:1

D : 1:2:1:2:4:2:1:2:1

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If you cross homozygous recessive short plant with heterozygous purple flower to heterozygous tall plant with heterozygous purple flower, what will be the expected phenotypic ratio?

Options

A : 9:3:3:1

B : 4:4:2:2

C : 3:1:3:1

D : 1:2:1:2:4:2:1:2:1

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If you have an organism with the genotype Pp HH rr Ww this can be used as a parent in test cross for________

Options

A : H locus

B : R locus

C : W locus

D : P locus

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Which of the following will be pure breeding for only one character?

Options

A : Hh Rr

B : HH Rr

C : HH RR

D : hh rr

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In an organism you observe that phenotypes of the progeny are as – 315 H/H R/R, 108 H/-r/r, 101 h/h R/-, 32 h/h r/r. This shows_____

Options

A : Linkage

B : Lethal alleles

C : Epistasis

D : Normal ratio

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In an experiment with drosophila eye colour purple/red and wing shape normal/vestigial you observe that offspring mainly have either purple vestigial trait or red normal trait. What is the expected parental trait?

Options

A : Purple long and Red long

B : Red Vestigial and purple long

C : Red vestigial and purple vestigial

D : Purple vestigial and red vestigial

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If you include more number of genes in the cross, a branched diagram will be easier to find progeny phenotype.

Options

A : True

B : False

C :

D :

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