Somatic cells in organisms of a particular diploidplant species normally have 14 chromosomes. Thechromosomes in the gametes are numbered from 1through 7. Rarely, zygotes are formed that containmore or fewer than 14 chromosomes. For each of thezygotes below, (i) state whether the chromosomecomplement is euploid or aneuploid; (ii) provideterms that describe the individual’s genetic makeupas accurately as possible; and (iii) state whether ornot the individual will likely develop through theembryonic stages to make an adult plant, and if so,whether or not this plant will be fertile.a. 11 22 33 44 5 66 77b. 111 22 33 44 555 66 77c. 111 222 333 444 555 666 777d. 1111 2222 3333 4444 5555 6666 7777
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Somatic cells in organisms of a particular diploid
plant species normally have 14 chromosomes. The
chromosomes in the gametes are numbered from 1
through 7. Rarely, zygotes are formed that contain
more or fewer than 14 chromosomes. For each of the
zygotes below, (i) state whether the chromosome
complement is euploid or aneuploid; (ii) provide
terms that describe the individual’s genetic makeup
as accurately as possible; and (iii) state whether or
not the individual will likely develop through the
embryonic stages to make an adult plant, and if so,
whether or not this plant will be fertile.
a. 11 22 33 44 5 66 77
b. 111 22 33 44 555 66 77
c. 111 222 333 444 555 666 777
d. 1111 2222 3333 4444 5555 6666 7777
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