Use the following information to answer the question.
A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a) of gene A ; a feathered stem, due to an allele (b) of gene B ; and hollow roots due to an allele (c ) of gene C . The three genes are linked and recombine.
A geneticist performed a testcross with an organism that had been found to be heterozygous for the three recessive traits, and she was able to identify progeny of the following phenotypic distribution ( += wild type ) :
Which of the progeny phenotypes will require recombination between genes A and B ? (A) 1,2,5 , and 6 (B) 1,3,6 , and 7 (C) 2,4,5 , and 8 (D) 2,3,5 , and 7

Question

23-08-2022
Biology

Answered

Use the following information to answer the question.
A plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a) of gene A ; a feathered stem, due to an allele (b) of gene B ; and hollow roots due to an allele (c ) of gene C . The three genes are linked and recombine.
A geneticist performed a testcross with an organism that had been found to be heterozygous for the three recessive traits, and she was able to identify progeny of the following phenotypic distribution ( += wild type ) :
Which of the progeny phenotypes will require recombination between genes A and B ? (A) 1,2,5 , and 6 (B) 1,3,6 , and 7 (C) 2,4,5 , and 8 (D) 2,3,5 , and 7

Answer :

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Vickynehra Vickynehra · Answer 1 · 2022-09-01T11:08:12-04:00

The progeny phenotypes will require recombination between genes A and B would be 1, 2, 5, and 6 .

The allelic makeup of the gamete from either the heterozygous parent can be seen in the progeny's phenotypes.
Recombinant phenotypes generally occur less frequently in populations than non-recombinant phenotypes.
The distance among connected genes would affect how frequently certain recombinant phenotypes occur.

The chromosomes which could be already produced as a result of homologous chromosomes trying to cross over will be known as recombinant kind chromosomes. Different allele combinations are created on the chromosomes by recombinant kind chromosomes.

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