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: 11501

#XL - S Microbiology

According to the endosymbiotic theory of the origin of eukaryotic cells, how did mitochondria originate?

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#Question id: 11502

#XL - S Microbiology

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles

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#Question id: 11502

#XL - T Zoology

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles

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#Question id: 11503

#XL - S Microbiology

Which process allowed the nucleomorphs of chlorarachniophytes to be first reduced, and then (in a few species) lost altogether, without the loss of any genetic information?

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#Question id: 11504

#XL - S Microbiology

Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?

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#Question id: 11505

#XL - S Microbiology

An individual mixotroph loses its plastids, yet continues to survive. Which of the following most likely accounts for its continued survival?