A population of insects is in Hardy-Weinberg equilibrium for a gene with alleles A = orange and a = yellow eyes. There are 91% orange and 9% yellow individuals in the population. If the fitness of the yellow phenotype suddenly drops to zero, what will be the allele frequency in the next generation?

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#Question id: 1098

#SCPH01 Biochemistry

Which of the following is the most plausible explanation for why an animal cell would be unable to reduce the Ca2+ concentration in its cytosol compared with the extracellular fluid?

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#Question id: 2074

#SCPH01 Biochemistry

In some cells, there are many ion electrochemical gradients across the plasma membrane even though there are usually only one or two proton pumps present in the membrane. The gradients of the other ions are most likely accounted for by:

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#Question id: 4571

#SCPH06 I Botany

Evolutionary trees such as this are properly understood by scientists to be

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#Question id: 2626

#SCPH05 I Biotechnology

lac operator is made up of

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#Question id: 20539

#SCPH06 I Botany

Aromatic hydrocarbons including benzene, toluene, ethylbenzene and xylene collectively referred as BTEX compounds. Which of them are not considered as carcinogenic?

1. Benzene

2. Toluene

3. Ethylbenzene

4. Xylene

Which of them is a correct option?