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?

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#Question id: 5748

#Unit 8. Inheritance Biology

When a diploid organism undergoes one or more rounds of endoreduplication (resulting in a gain of more than one complete haploid set of chromosomes), the resulting cells are best described as

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#Question id: 5749

#Unit 8. Inheritance Biology

Type of mutation in which a pyrimidine is substituted for a purine

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#Question id: 5750

#Unit 8. Inheritance Biology

 type of microorganism that can exist on minimal medium

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#Question id: 5751

#Unit 8. Inheritance Biology

A biochemical mutant that must be supplied with a particular nutrient for growth would be described as a(n)

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#Question id: 5752

#Unit 8. Inheritance Biology

base change that changes a codon for an amino acid to a stop codon

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#Question id: 5753

#Unit 8. Inheritance Biology

A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a