Niches of two coexisting species of pond snail of the same genus are likely to be similar, but not identical, because of which of the following?

I. Closely related species use similar resources.

II. Competitive interactions exist between these species. 

III.  Unlimited resources are available.

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#Question id: 15408

#Unit 8. Inheritance Biology

Which of the following is not a protein or group of proteins required for conjugation to occur?

TLS Online TPP Program

#Question id: 15409

#Unit 8. Inheritance Biology

 A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);

          booster                              6

          booster, silkless                  137       

          booster, liguleless, silkless      291

          liguleless                          142

          liguleless, silkless                  3

          silkless                            30

          booster, liguleless                  34

          wildtype                            339

What is the order of the loci on the chromosome? 

TLS Online TPP Program

#Question id: 15410

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

TLS Online TPP Program

#Question id: 15411

#Unit 8. Inheritance Biology

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?

TLS Online TPP Program

#Question id: 15412

#Unit 8. Inheritance Biology

For a trait known to be caused by a mitochondrial gene variant, there may be an occasional female that can transmit different phenotypes to her progeny on an apparently random basis. What situation might you suspect?

TLS Online TPP Program

#Question id: 15413

#Unit 5. Developmental Biology

Paired box 6 (Pax6) transcription factor requires for :