Answer:
The correct answer is - d) all choices are correct.
Explanation:
Cattles remember the behaviour of human how they have treated them in the experiment and they also become less fearful of their handlers due to their gentle treatment.
Cattles develop memory and have a bond with their handlers and remember them and recognize them very well. In this experiment, it is found that animals also create an emotional bond with the human treat them well and gentle.
Answer:
The given blank can be filled with operator.
Explanation:
The proteins that assist in turning on or turning off the function of a specific gene by getting combined with certain sections of the DNA are known as transcription factors. The transcription factors that activate the transcription of a specific gene are known as activators, while that prevents transcription and is termed as repressors.
A repressor can be an RNA or a DNA binding protein, which prevents the articulation of genes by getting combined with the operator. A repressor, which binds with DNA prevents RNA polymerase from getting combined with the promoter, which further inhibits the transcription of the genes into mRNA.
Answer:
The answer is the first option.
Explanation:
Farming emerged because being a nomad was no longer suitable for increasing population size. Farming allowed people to stay in one place and properly feed their families, which was a definite positive impact on population size.
2. club fungi
explanation:
Corn smut is caused by Ustilago maydis while wheat rust is caused by Puccinia triticina. Both Ustilago maydis and Puccinia triticina are classified under division Basidiomycota. Basidiomycota is also called as club fungi. These fungi form specific club-shaped fruiting bodies called basidia. Basidia are the site for the formation of basidiospores.
