Four (4) known homozygous strains of com have the following chromosomal constitu

Question

Four (4) known homozygous strains of com have the following chromosomal constitutions normal a translocation between chromosomes I and III a translocation between chromosomes III and IV a translocation between chromosomes II and IV When each of the known strains is crossed with a fifth unknown homozygous strain U the following results were obtained: a times U 2 rings of 4 b times U 1 ring of 4, 2 bivalents c times U 1 ring of 8 d times U 1 ring of 4, two bivalents What is the chromosomal constitution of the U Strain?

Explanation / Answer

What is the chromosomal constitution of the U STRAIN?

Four known homozygous strains of corn have the following chromosomal constitutens

a. normal;

b. translocation chromosomes i and iii

c. translocation chromosomes iii and iv

d. translocation chromosomes ii and iv

1 ring of 4 , 2 bivalents----------answer

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Other have heterozygous translocation ----leads semi sterility in corn

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