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TLS Online TPP Program

#Id: 8879

This combination of two positive feedback loops:
one that activates a CDK1 activator (Cdc25C)
one that inhibits a CDK1 inhibitor (Wee1)
results in the abrupt and irreversible transition from G2 into mitosis.

#XL - R Botany #Steps in cell cycle, regulation and control of cell cycle #Part B Pointers
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TLS Online TPP Program

#Id: 8879

#XL - T Zoology

This combination of two positive feedback loops:
one that activates a CDK1 activator (Cdc25C)
one that inhibits a CDK1 inhibitor (Wee1)
results in the abrupt and irreversible transition from G2 into mitosis.
TLS Online TPP Program

#Id: 9571

#XL - T Zoology

Ockham’s principle - Principle of parsimony
TLS Online TPP Program

#Id: 9572

#XL - T Zoology

The Forces of Evolution

Mutation, 

Genetic drift

Gene flow or migration

Selection
TLS Online TPP Program

#Id: 7337

#XL - T Zoology
TLS Online TPP Program

#Id: 7338

#XL - T Zoology

Nonrandom Mating Nonrandom mating affects the way in which alleles combine to form genotypes and alters the genotypic frequencies of a population.
TLS Online TPP Program

#Id: 7339

#XL - T Zoology

Positive assortative mating
Individuals' mate with others who are like themselves phenotypically for selected traits. The net effect of positive assortative mating is a progressive increase in the number of  homozygous genotypes (AA and aa)
TLS Online TPP Program

#Id: 7340

#XL - T Zoology