#Question id: 15387
#Unit 8. Inheritance Biology
#Question id: 28383
#Unit 5. Developmental Biology
In the case of recessive mutant of Antennapedia, the gene fails to be expressed in the second thoracic segment, then what will cause?
#Question id: 1711
#Unit 4. Cell Communication and Cell Signaling
On entering a germinal center, the primary B-blasts grow exponentially to form which cell type in the dark zone?
#Question id: 5298
#Unit 8. Inheritance Biology
Four E. coli strains of genotype a+ b− are labeled 1, 2, 3, and 4. Four strains of genotype a− b+ are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and (after incubation) are plated to determine the frequency of a+ b+ recombinants. The following results are obtained, where M = many recombinants, L = low numbers of recombinants, and 0 = no recombinants. On the basis of these results, assign a sex type (either Hfr, F+, or F−) to each strain
#Question id: 8845
#Unit 9. Diversity of Life Forms
The experimental approach taken in current biological investigations presumes that