A) determine the genotype of a plant at \[{{F}_{2}}\]+
B) predict whether two traits are linked
C) assess the number of alleles of a gene
D) determine whether two species or varieties will breed successfully
Correct Answer: B
Solution :
When \[{{F}_{1}}\] hybrid is crossed with its recessive parent, it is called test cross. By test cross heterozygosity and homozygosity of the organism can be tested. It gives 1 : 1 ratio in monohybrid and 1 : 1 : 1 : 1 ratio in dihybrid condition. In presence of linkage the ratio varies from this.
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