Crude differential centrifugation techniques can be conveniently employed to isolate
intact mitochondria and microsomes.

TLS Online TPP Program

#Id: 6957

#Unit 8. Inheritance Biology

Robertsonian translocation

The long arms of two acrocentric chromosomes become joined to a common centromere through a translocation, generating a metacentric chromosome with two long arms and another chromosome with two very short arms. The smaller chromosome is often lost because very small chromosomes do not have enough mass to segregate properly during mitosis and meiosis.

TLS Online TPP Program

#Id: 3699

#Unit 2. Cellular Organization

Genetic redundancy means that two or more genes are performing the same function and that inactivation of one of these genes has little or no effect on the biological phenotype

Redundancy seems to be widespread in genomes of higher organisms

TLS Online TPP Program

#Id: 5375

#Unit 10. Ecological Principles

Mark-recapture technique can have drawbacks;

1. Some animals that have been marked may learn to avoid the traps. 
2. Recapture rates will then be low, resulting in an overestimate of population size.

TLS Online TPP Program

#Id: 8438

#Unit 10. Ecological Principles

Where conditions for plant growth are less stressful, plants can evolve life history traits that fall along a continuum from competitors to ruderals.

TLS Online TPP Program

#Id: 837

#Unit 4. Cell Communication and Cell Signaling

Alternaria produces the AAL toxin, which activates a plant cell death program in tomato (Solanum lycopersicum) leaves.