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TLS Online TPP Program

#Id: 8112

The amino group at C-2 bears a fatty acid in amide linkage.

The fatty acid is usually saturated or monounsaturated, with 16, 18, 22, or 24 carbon atoms.

Ceramide is the parent compound for this group.

#Section 2: General Biology #Lipid #Part B Pointers
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TLS Online TPP Program

#Id: 9216

#Section 3: Genetics, Cellular and Molecular Biology

Ne = Male + Female  (when both are equal)
Ne = 4 × n(male) × n(female)/n(male)+n(female) 
(When both unequal Ne is smaller than then sum of both)
TLS Online TPP Program

#Id: 8950

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 8951

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 2229

#Section 3: Genetics, Cellular and Molecular Biology

The Birth of a Gene - Duplication is the most common way that new genes arise in eukaryotes. 
TLS Online TPP Program

#Id: 8952

#Section 3: Genetics, Cellular and Molecular Biology

One is unequal crossing over, in which recombination happens between different positions on chromosomes that are misaligned during meiosis. 
Another is replication slippage, in which the DNA polymerase loses its place and copies a segment of chromosome twice.
TLS Online TPP Program

#Id: 8953

#Section 3: Genetics, Cellular and Molecular Biology

A third way that gene duplicates arise is by retrotransposition.

Here the messenger RNA from a gene is reverse-transcribed to DNA, which is then integrated into the genome.