In Neurospora a cross between the genotypes 'A' and 'a' results in an ascus with ascospores of genotypes as shown below: 

Ascus Class	Ascospore
I	A	A	A	A	a	a	a	a
II	A	A	a	a	a	a	A	A

 Statements A to D are events that could have occurred during meiosis.

A) Class I is results of no crossing over between the centromere and gene.

B) Class II is results of single crossing over between the centromere and gene

C) Class I shows segregation of alleles 'A' and 'a' in meiosis II

D) Class II shows segregation of alleles 'A' and 'a' in meiosis II

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#Question id: 11485

#Unit 7. System Physiology – Animal

In the odorant cells of mammals, specific odorants are detected by binding to _______

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#Question id: 12974

#Unit 10. Ecological Principles

Which lake zone would be absent in a very shallow lake?

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#Question id: 5360

#Unit 1. Molecules and their Interaction Relevant to Biology

Following some different genetic disorder traces in families. 

Family	Father	Mother	Son	Daughter
A	Affected	Affected	Unaffected	Unaffected
B	Affected	Affected	Unaffected	Affected
C	Unaffected	Unaffected	Undetermined	Affected
D	Affected	Unaffected	Unaffected	Affected

 Which of the following possible mode of inheritance in the Family A, B, C and D respectively

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#Question id: 28205

#Unit 5. Developmental Biology

Genome of the epithelium limits its ability to respond to signals from the mesenchyme, the response is species specific is called___

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#Question id: 26803

#Unit 8. Inheritance Biology

In some sheep, the presence of beard is produced by an autosomal allele that is dominant in males and recessive in females. A beard female is crossed with a homozygous beardless male. One of the resulting F1 females is crossed with a beardless male. What proportion of the male and female progeny from this cross will have beard in F2 generation?