. The elements of genetics. Genetics. ROUND WRINKLED. 2n Meiosis n Fertilis*^ 2n Meiosis n Fertilis'^ 2n MEIOSIS GAMETES AND FERTILIS'* 2n Fig. 7.—Mendel's experiment of crossing round and wrinkled peas. The parent strains (P) were true breeding, giving only one kind of gamete (small circles) each. The hybrid between them (Fj) was round seeded, but gave two kinds of gamete in equal numbers, one like the gametes from the round parent and the other like the gametes from the wrinkled parent. When pollen of the two kinds fertilizes embryo sacs of the two kinds in random proportions, three round se
. The elements of genetics. Genetics. ROUND WRINKLED. 2n Meiosis n Fertilis*^ 2n Meiosis n Fertilis'^ 2n MEIOSIS GAMETES AND FERTILIS'* 2n Fig. 7.—Mendel's experiment of crossing round and wrinkled peas. The parent strains (P) were true breeding, giving only one kind of gamete (small circles) each. The hybrid between them (Fj) was round seeded, but gave two kinds of gamete in equal numbers, one like the gametes from the round parent and the other like the gametes from the wrinkled parent. When pollen of the two kinds fertilizes embryo sacs of the two kinds in random proportions, three round seeded peas are obtained on the average for every wrinkled seeded pea in Fg. The wrinkled peas and one-third of the round peas of F2 are true breeding like the original parents, but two-thirds of the round peas resemble F^ in constitution and again give the 3 : i segregation in F3. The chromosome cycle of reduction and fertilization is shown in relation to Mendel's observations on the right of the diagram, where 2» is the somatic and n the gametic number of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darlington, C. D. (Cyril Dean), 1903-; Mather, Kenneth. New York : Macmillan
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