Two varieties of maize averaging 50 and 20 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 35 inches in height. Out Of the 16 F2 plants, the 5 are 35 inches. What is the probable number of independent segregating polygenes involved in this trait?

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#Question id: 1120

#SCPH06 I Botany

A mutation that knocks out the GTPase activity of a G protein would have what effect on a cell?

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#Question id: 1575

#I Life Science/ Life Sciences Group – I-V

CpG unmethylated dinucleotides recognize by

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#Question id: 1269

#SCPH05 I Biotechnology

Which of the following constituents are not found in most basal laminae?

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#Question id: 366

#SCPH01 Biochemistry

What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-10 M?

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#Question id: 4965

#SCPH06 I Botany

What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?

1.  origin of mitochondria

2.  origin of multicellular eukaryotes

3.  origin of chloroplasts

4.  origin of cyanobacteria

5.  origin of fungal-plant symbioses