If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

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#Question id: 7049

#Unit 5. Developmental Biology

Invaginating cells during amphibian gastrulation, in which the main body of each cell is displaced toward the inside of the embryo while maintaining contact with the outside surface by way of a slender neck-

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#Question id: 7050

#Unit 5. Developmental Biology

Neoblast of planarian flatworms is an example of-

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#Question id: 7051

#Unit 5. Developmental Biology

Which of the following is not maternal dorsalizing factors in amphibia?

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#Question id: 7052

#Unit 5. Developmental Biology

Which of the following gene involved in maintaining the stem cell property of the P blastomeres in nematodes?

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#Question id: 7053

#Unit 5. Developmental Biology

The ability of an embryo or larva to react to an environmental input with a change in form, state, movement, or rate of activity (i.e., phenotypic change)

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#Question id: 7054

#Unit 5. Developmental Biology

A type of cadherin expressed in epithelial tissues as well as all early mammalian embryonic cells