Match the structural properties of DNA with the respective types of DNA in which they are found.

COLUMN – I	COLUMN – II
A. Pitch per turn of helix	1. 45.6 angstrom 2. 24.6 angstrom 3. 33.2 angstrom
B. Helix packing diameter	1. 23.7 angstrom 2. 18.4 angstrom 3. 25.5 angstrom
C. Major-groove proportions	1. Flattened out on helix surface 2. Extremely narrow but very deep 3. Wide and of intermediate depth
D. Minor-groove proportions	1. Very broad but shallow 2. Extremely narrow but very deep 3. Narrow and of intermediate depth

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#Question id: 7282

#Unit 5. Developmental Biology

In humans, neural tube closure defects occur in about 1 in every 1000 live births. Failure to close the neural tube can result from both genetic and environmental causes. A recent report has demonstrated that zinc deficiency disrupts neural tube closure by:

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#Question id: 7283

#Unit 5. Developmental Biology

The Drosophila orthodenticle gene and the vertebrate Otx genes are homologous and provide a good example of the conservation of gene function during evolution. Which of the following statement is correct regarding to the expression of gene expression.

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#Question id: 7284

#Unit 5. Developmental Biology

Choose the correct match.

Genes	Axis polarity
a. Maternal deficiency of gurken	i. Posteriorization of follicle cells
b. Maternal deficiency of torpedo	ii. Ventralization of embryo
c. Maternal deficiency of toll	iii. Dorsalization of embryo
	iv. No anterior posterior axis

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#Question id: 7285

#Unit 5. Developmental Biology

During xenopus gastrulation, C3a functions as a short-range chemoattractant to guide the radial intercalation movements of cells. If Knockdown of C3a with antisense morpholinos results:

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#Question id: 15746

#Unit 5. Developmental Biology

In Drosophila, if there is one X chromosome and three sets of autosomes then the fly is:

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#Question id: 15747

#Unit 5. Developmental Biology

In Drosophila, if there is two X chromosome and three sets of autosomes then the fly is: