In prophase I of meiosis, an inversion loop forms.

TLS Online TPP Program

#Id: 8550

#Unit 1. Molecules and their Interaction Relevant to Biology

diisopropylphosphofluoridate, reacts with a serine OH group in the active site of esterases such as acetylcholinesterase/chymotrypsin, whilst the organomercury compound p-hydroxymercuribenzoate reacts with a cysteine group, in both cases resulting in covalent bond formation and enzyme inhibition.

TLS Online TPP Program

#Id: 7253

#Unit 5. Developmental Biology

Generation of antibodies to T-dependent antigens

TLS Online TPP Program

#Id: 2011

#Unit 8. Inheritance Biology

Testcross Cross between an individual with an unknown genotype and an individual with the homozygous recessive genotype.

TLS Online TPP Program

#Id: 3184

#Unit 3. Fundamental Processes

In some situations a mitochondrion has both paternal and maternal alleles. This has two requirements: that both parents provide alleles to the zygote (which of course is not the

case when there is maternal inheritance.

TLS Online TPP Program

#Id: 6155

#Unit 3. Fundamental Processes

Human member of the Y family of translesion polymerases (DNA Pol n) correctly inserts two A residues opposite a thymine dimer.