Practice Questions

TLS Online TPP Program

#Question id: 10324

Which of the following is not true of all horizontally oriented phylogenetic trees, where time advances to the right?

#9. Diversity of Life Forms

Each branch point represents a point in absolute time.
Organisms represented at the base of such trees are ancestral to those represented at higher levels.
The more branch points that occur between two taxa, the more divergent their DNA sequences should be.
The common ancestor represented by the rightmost branch point existed more recently in time than the common ancestors represented at branch points located to the left.

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TLS Online TPP Program

#Question id: 15758

#12. Applied Biology

Adsorbants like activated charcoal or PVP (polyvinylpyrrolidon) may be used as adsorbant to prevent

TLS Online TPP Program

#Question id: 15759

#12. Applied Biology

Somatic hybrids exhibit the full somatic complement of one parental species, while all or nearly all chromosomes of the other parental species are lost during the preceding mitotic divisions; such hybrids arc referred to as

TLS Online TPP Program

#Question id: 15765

#5. Developmental Biology

What is symmetrical differentiation?

TLS Online TPP Program

#Question id: 15766

#5. Developmental Biology

If a stem cell divides symmetrically, results

TLS Online TPP Program

#Question id: 15767

#5. Developmental Biology

A stem cell function in the organism to generate only one cell type is said to be

TLS Online TPP Program

#Question id: 15769

#5. Developmental Biology

A stem cell capable of producing all the cells of the embryo is said to be