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

#Question id: 3306

#Unit 11. Evolution and Behavior

Death feigning behaviour (i.e., pretending to be dead when attacked) is found in snakes and millipedes. This similarity in behaviour between snakes and millipedes is an example of

#Question id: 3307

#Unit 11. Evolution and Behavior

Which of the following conditions is not necessarily be fulfilled to trigger natural selection

#Question id: 3308

#Unit 11. Evolution and Behavior

Consider a single locus with 3 alleles which are at Hardy- Weinberg equilibrium. If the frequency of all homozygous genotypes is 0.54, what is the frequency of allele in population?

#Question id: 3309

#Unit 11. Evolution and Behavior

In a given population, 128 out of every 400 people has a carrier for recessive allele b that caused cancer in homozygous condition,  Assuming the population is in Hardy- Weinberg equilibrium, which of the following is the expected frequency of allele B and b in population respectively?

#Question id: 3310

#Unit 11. Evolution and Behavior

In Prey population of genotype A1A1(100), A1A2( 200) and A2A2( 100) present in island, when predator introduced this area results ¼ of A1A1 and ½ of A1A2 killed over time however, no genotype A2A2 kill. What will be frequency of A1 allele in the population?

#Question id: 3311

#Unit 11. Evolution and Behavior

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1 genotype is 0.01) The frequency of A2A2 is