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#Question id: 277


Which statement is not true about histones?

#SCPH12 I Genetics
  1. They are positively charged at biological pH.

  2. They only occur in eukaryotes.

  3. Most species that have histones contain five different types.

  4. There is wide variation in the amino acid sequences of histones among species.

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#Question id: 1640

#SCPH05 I Biotechnology

An immune response against grass pollen often involves:

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#Question id: 3851

#SCPH28 | Zoology

Transcription is initiated at sites called:

TLS Online TPP Program

#Question id: 10536

#SCPH05 I Biotechnology

Hormonal interactions contribute to plant–insect herbivore interactions such as— ethylene, salicylic acid, and jasmonic acid. In particular, ethylene appears to play an important role in this context, what will be the effect of ethylene when is applied alone and when is applied with other amino acids?

a) ethylene applied together with JA it seems to reduces defense responses

b) Ethylene appears to applied alone to plants, ethylene has little effect on defense-related gene activation

c) when ethylene applied together with JA it seems to enhance JA responses or defense responses are significantly increased

d) Ethylene appears to applied alone to plants, ethylene has more effect on defense-related gene activation

Which of the following combination is correct about ethylene effects?

TLS Online TPP Program

#Question id: 1723

#SCPH05 I Biotechnology

Which of the following statements is the single best description of the location where adaptive immune responses arise?

TLS Online TPP Program

#Question id: 3552

#SCPH01 Biochemistry

In corn, three dominant alleles, called A, C, and R, must be present to produce colored seeds. Which of the following genotype would produce 25 % color seeded plant, When cross with Aaccrr?