A biome with dry and rainy seasons, trees in patches, and ground cover of tropical bunchgrass is called a

TLS Online TPP Program

#Question id: 4180

#Unit 3. Fundamental Processes

The anticodon of tRNAala can bind to three different codons for alanine (GCU, GCC and GCA) because

TLS Online TPP Program

#Question id: 15192

#Unit 8. Inheritance Biology

Genes that control coat color in mammals represent some of the best early examples of genes with multiple alleles exhibiting different phenotypes. A classic example is the C gene in hamsters. Three of the known alleles of this gene are C, c^a and c^k. Each supplies a different amount of black pigment to the coat hair. The phenotypes of three different homozygous strains are as follows.

Based on the concepts of recessivity, determine whether ck and ca were dominant or recessive alleles by crossing the true-breeding albino hamsters  with the true-breeding sepia hamsters. From the resulting F1 progeny phenotype, what would be the ratio of F2 phenotype

TLS Online TPP Program

#Question id: 34150

#Unit 7. System Physiology – Animal

A 7-year-old boy is evaluated for short stature. His average circulating growth hormone level is within the normal range for his age, but levels of IGF-I are reduced. His growth failure is most likely due to a defect in:

TLS Online TPP Program

#Question id: 2954

#Unit 2. Cellular Organization

Cyclin concentrations are highest during which periods of the cell cycle?

TLS Online TPP Program

#Question id: 11712

#Unit 9. Diversity of Life Forms

The following are all characteristic of the water molds (oomycetes) except