In the diagram below, the dotted line marks the point of initiation of bidirectional replication

A. On the right side of the dotted line, leading strand synthesis occurs using the lower strand as the template.

B. On the right side of the dotted line, leading strand synthesis occurs using the upper strand as the template.

C. A ligase deficient (lig- ) mutant would affect replication of t11e upper strand on the left side of the dotted line.

D. A ligase deficient (lig- ) mutant would affect replication of the lower strand on the left side

of the dotted line_

Which one of the following options represents the combinations of the CORRECT statements?

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#Question id: 14698

#Unit 13. Methods in Biology

A bag has 13 red, 14 green and 15 black balls. The probability of getting exactly 2 blacks on pulling out 4 balls is P1. Now the number of each colour ball is doubled and 8 balls are pulled out.The probability of getting exactly 4 blacks is P2. Then

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#Question id: 14699

#Unit 13. Methods in Biology

If A and B are arbitrary events, then

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#Question id: 14700

#Unit 13. Methods in Biology

One mapping is selected at random from all the mappings from the set S = {1,2,3,...n} into itself. The probability that the selected mapping is one to one is

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#Question id: 14706

#Unit 5. Developmental Biology

Match the types of cell movement during gastrulation

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#Question id: 14707

#Unit 5. Developmental Biology

Which of the following organ belongs to the internal layer of gastrula?

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#Question id: 14708

#Unit 5. Developmental Biology

Difference between gastrulation in Xenopus and sea urchin;

I. In Xenopus, formation of blastopore: mesoderm and endoderm move inside by involution over blastopore lip.

II. In sea urchin, formation of blastopore: mesodermal cells migrate into the interior; endoderm moves inside by invagination of the epithelial sheet.