Different genetic cross regarding two independently assorting non allelic gene with complete dominance and their phenotypic ratio showed in a following. Which of the following is incorrect combination? 

	Genetic cross		Phenotype ratio
1	AABb X AaBb		3:1
2	Aabb X  AaBb		3:1:3:1
3	AABb X AaBB		1:1
4	Aabb X aaBb		1:1:1:1

#Question id: 3806

#Section 3: Genetics, Cellular and Molecular Biology

How are damaged nucleotides recognized by DNA repair enzymes?

#Question id: 3808

#Section 3: Genetics, Cellular and Molecular Biology

Fibroblast cells from several different xeroderma pigmentosa patients were cultured, then fused in intergenic complementation studies. Which cell fusions would not result in a hybrid capable of repairing damaged DNA?

#Question id: 3809

#Section 3: Genetics, Cellular and Molecular Biology

MMR is a highly conserved biological pathway. Several human MMR proteins have been identified based on their homology to E. coli MMR proteins. Match the following

#Question id: 3811

#Section 3: Genetics, Cellular and Molecular Biology

The mechanism of DNA replication is studied in an E. coli replication fork. Which is a characteristic of this replication fork?

#Question id: 3848

#Section 3: Genetics, Cellular and Molecular Biology

are small molecules that function as adapters between amino acids and codons.

#Question id: 3849

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is short 20 to 22-nucleotide single-stranded RNAs that block the expression of complementary or partially complementary mRNAs.