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TLS Online TPP Program

#Question id: 4315

A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. When she finds that the introduced strand separates into single-stranded RNAs, what other evidence of this single-stranded RNA piece's activity would she find?

#SCPH06 I Botany

  1. She can measure the degradation rate of the remaining single strand.

  2. The rate of accumulation of the polypeptide encoded by the target mRNA is reduced.

  3. The amount of miRNA is multiplied by its replication.

  4. The cell's translation ability is entirely shut down.

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TLS Online TPP Program

#Question id: 5427

#SCPH06 I Botany

In a plant, height is control by three quantitative trait loci.  Each dominant additive allele is contributing 3 cm height in plant. Maximum expected plant height is 20 cm. What is minimum expected height? 
TLS Online TPP Program

#Question id: 5427

#SCPH28 | Zoology

In a plant, height is control by three quantitative trait loci.  Each dominant additive allele is contributing 3 cm height in plant. Maximum expected plant height is 20 cm. What is minimum expected height? 
TLS Online TPP Program

#Question id: 5428

#SCPH06 I Botany

If trait are governed by polygenic. If plant genotype AABB  ( 8 cm height ) were cross with aabb ( 2 cm height ) produced F1 and allowed to selfing . which of the following phenotypic height are not observe in F2 plant if all gamete participate in fertilization ?
TLS Online TPP Program

#Question id: 5428

#SCPH28 | Zoology

If trait are governed by polygenic. If plant genotype AABB  ( 8 cm height ) were cross with aabb ( 2 cm height ) produced F1 and allowed to selfing . which of the following phenotypic height are not observe in F2 plant if all gamete participate in fertilization ?
TLS Online TPP Program

#Question id: 5429

#SCPH06 I Botany

Assume that three loci, each with two alleles (A and a, B and b, C and c), determine the differences in height between two homozygous strains of a plant. These genes are additive and equal in their effects on plant height. One strain (aabbcc) is 10 cm in height. The other strain (AABBCC) is 22 cm in height. The two strains are crossed, and the resulting F1 are interbred to produce 1000 F2 progeny. what is number of F2 progeny having intermediate height?
TLS Online TPP Program

#Question id: 5429

#SCPH28 | Zoology

Assume that three loci, each with two alleles (A and a, B and b, C and c), determine the differences in height between two homozygous strains of a plant. These genes are additive and equal in their effects on plant height. One strain (aabbcc) is 10 cm in height. The other strain (AABBCC) is 22 cm in height. The two strains are crossed, and the resulting F1 are interbred to produce 1000 F2 progeny. what is number of F2 progeny having intermediate height?