(1) Meiosis is completed shortly after ovulation, concomitant with the formation of an extensive sperm aster nucleated by the sperm-derived centrosome.

(2) The most interesting aster configuration occurs when the spindle is parallel to the surface.

(3) Each centriole now consists of a pair of protein bodies surrounded by radiating strands of protein called the aster .

(4) After the first hard freeze, cut back perennials such as aster , campanula, daylily, phlox, and veronica, leaving 6-inch stubs above the ground.

(5) The aster is considered the other classic autumn flower.

(6) As with other members of the daisy family, annual aster flowers are composed of many long, slender petals radiating from a central disc of bright yellow.

(7) Such abnormalities can be due to abnormalities in the number of asters and spindle structures at earlier stages of meiosis.

(8) Then, long after the foxgloves have withered and the last crabapple has rolled from the tree and been carted off by a brown squirrel, the asters bloom, the last flower before snow.

(9) But asters also come in a full range of reds and pinks, plus white.

(10) Roses, pansies, perennial asters , zinnias and even weeds become mildewed.

(11) These asters make excellent backdrops for larger flowers in bouquets, but we also like letting them shine on their own - toward the fronts of borders or in small, densely planted beds.

(12) Sow annual flowers such as asters , cosmos, zinnias and marigolds as soon as the frost has passed and the air begins to warm up.

(13) Crabgrass and plantain are an indication of acidic soil, while wood asters and poppies prefer alkaline soil.

(14) Plant late-blooming asters behind shorter perennials to hide the damage until they finish blooming.

(15) Purple asters bloom in fall, attracting monarch butterflies and providing one last blast of color when many blooms have faded.

(16) Among the favorites are asters and daisies, milkweeds, mustards, mints, peas, and vervains.

(17) There are flowers everywhere in a carpet of colour: orange globemallows and white asters and purple lupins.

(18) Not long after we moved from our small, shady city lot to a sprawling sunny piece of land in the country, we were rewarded by a visit from a flock of monarch butterflies that stopped to feed at a plot of wild asters .

(19) Before mitosis, the centrosome becomes duplicated and the daughter centrosomes move to opposite sides of the nucleus and form asters .

(20) The fastest-growing asters require yearly division in spring.