In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?

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#Question id: 2098

#SCPH01 Biochemistry

The major site of lipid synthesis in eukaryotic cells is the

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#Question id: 15653

#SCPH06 I Botany

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. You have isolated a mutation that causes constitutive melibiase activity, which you designate MelA–. P1 phage mapping experiments using a Tn5 insertion linked to Mel1 show that MelA– is not linked to Mel1. Moreover you find that when an amber suppressor is introduced into a MelA– mutant, normal melibiase regulation is restored. Classify the MelA– mutation on the basis of genetic properties,  make a proposal for the type of regulatory functions affected by the MelA– mutation?

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#Question id: 14853

#SCPH06 I Botany

If the sum of the mean and the variance of a Binomial distribution for 18 trials is 10, find the distribution

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#Question id: 18086

#SCPH01 Biochemistry

If the base pair is adjacent to loops or bulges, the neighboring loops and bulges tend to _______ the base-pair formation.

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#Question id: 6971

#SCPH28 | Zoology

Neural crest cells taking the dorso-lateral route will become: