A graph shows the frequency distribution of the character (body size). B graph shows the relation between body size and fitness, within one generation, and the third the expected change in the average for the character over many generations (if body size is inherited). Which of the following correct figure for Average size with respect to time?

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#Question id: 12090

#Unit 10. Ecological Principles

The theory of punctuated equilibrium argues that

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#Question id: 8902

#Unit 9. Diversity of Life Forms

What do craniates have that earlier chordates did not have?

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#Question id: 8934

#Unit 9. Diversity of Life Forms

At which developmental stage should one be able to first distinguish a protostome embryo from a deuterostome embryo?

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#Question id: 22952

#Unit 5. Developmental Biology

Many of the genes that determine floral organ identity are MADS box genes, Except 

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#Question id: 4826

#Unit 8. Inheritance Biology

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?