How many recombinant clones must be screened in order to be 99% certain that a particular gene is found in a YAC library of human DNA where the average size of an insert is 500 kbp? The human genome size is about 3.2 x 10⁶ kbp. 

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#Question id: 7085

#Unit 5. Developmental Biology

Experiments by Pieter Nieuwkoop and Osamu Nakamura showed that the organizer receives its special properties from signals coming from the:

TLS Online TPP Program

#Question id: 7086

#Unit 5. Developmental Biology

In mammalian development, Only trophoblast cells synthesize the transcription factor Cdx2, which:

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#Question id: 7087

#Unit 5. Developmental Biology

In case of xenopus laevis which cells make up the Niuewkoop center?

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#Question id: 7088

#Unit 5. Developmental Biology

The homolog of GSK-3 in Drosophila is:

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#Question id: 7089

#Unit 5. Developmental Biology

The ecdysozoans are:

TLS Online TPP Program

#Question id: 7090

#Unit 5. Developmental Biology

In what way, if any, does the chromosomal determination of sex differ in Drosophila and humans?