Review the formula for effective population size. Imagine a population of 1,000 small rodents. Of these, 300 are breeding females, 300 are breeding males, and 400 are nonbreeding  juveniles.  What is the effective  population size?

TLS Online TPP Program

#Question id: 33347

#Unit 2. Cellular Organization

A rapidly growing bacterial species such as E. coli exhibits a typical phase of growth cycle in liquid nutrient broth (lag phase → log phase → stationary phase → death phase). If a bacterial culture has starting density of 10³ cells/ml has a lag time of 10 minutes and a generation time of 10 minutes, what will the cell density be at (cells/ml) 50 minutes?

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#Question id: 33469

#Unit 2. Cellular Organization

TLS Online TPP Program

#Question id: 33470

#Unit 2. Cellular Organization

TLS Online TPP Program

#Question id: 33471

#Unit 2. Cellular Organization

TLS Online TPP Program

#Question id: 33472

#Unit 2. Cellular Organization

Find correct True and False statements

A. Human females have 23 different chromosomes, whereas human males have 24.

B. In the living cell, chromatin usually adopts the extended “beads-on-astring” form.

C. The four core histones are relatively small proteins with a very high proportion of positively charged amino acids; the positive charge helps the histones bind tightly to DNA, regardless of its nucleotide sequence.

D. Nucleosomes bind DNA so tightly that they cannot move from the positions where they are first assembled.

TLS Online TPP Program

#Question id: 33473

#Unit 2. Cellular Organization

Which of the following specialized DNA sequences and their functions that act to ensure that the number and morphology of chromosomes are constant from one generation of a cell to the next.

 Replication origins B. Centromeres C. Telomeres