Kinetochores assemble on regions of chromosomal DNA marked by a centromere-specific H3 histone variant called CENP-A.

TLS Online TPP Program

#Id: 9197

#Section 3: Genetics, Cellular and Molecular Biology

Stabilized natural selection

Favor intermediate phenotype but eliminate lower and higher-grade phenotype

It introduced homogeneity in the population

Exp - clutch size of birds that lay too many or too few eggs per nest have lower fitness values than do those that lay an intermediate number of eggs

TLS Online TPP Program

#Id: 8893

#Section 3: Genetics, Cellular and Molecular Biology

Merotelic attachment 

A kinetochore can attach to microtubules emanating from both poles at the same time

TLS Online TPP Program

#Id: 8088

#Section 2: General Biology

The presence of one or more fatty acids with cis double bonds interferes with this tight packing and results in less stable aggregates.

TLS Online TPP Program

#Id: 8157

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 8185

#Section 3: Genetics, Cellular and Molecular Biology

Two types of plant peroxisomes:

Present in leaves - participates in photorespiration.

Present in germinating seeds (glyoxysomes) - converts fatty acids into sugars.