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: 10312

#Unit 6. System Physiology – Plant

Methyl group of acetyl-CoA with the oxaloacetate by using water molecules is coverted to methylene in citrate, this type of reaction catalysed is known as

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#Question id: 305

#Unit 1. Molecules and their Interaction Relevant to Biology

Conditions for ionic bond formation is / are________

(A) Small cation, large anion

(B) Low IP of cation, high electron affinity of anion

(C) Large cation, small anion and less charge

(D) Less lattice energy

Correct answer is:

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#Question id: 18886

#Unit 13. Methods in Biology

What type of microscopy allows for the visualization of internal components within live, unstained specimens?

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#Question id: 24139

#General Aptitude

HAT : HEAD

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#Question id: 11338

#Unit 10. Ecological Principles

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that