Some fruit flies are born with curly wings which makes them unable to fly. it has been shown that curly words are caused by a dominant gene which can be represented by the symbol w, while the recessive normal wing gene is represented by the symbol w. if a parent fly with the genotype ww is crossed with a parent of the genotype ww, what percentage the offspring will have curly wings?

The correct answer would be 100%.

The genotype of a parent is WW. Thus it will produce only one type of gamete  that is, W.

The genotype of other parent is Ww and thus two types of gametes would be produced W and w.

The cross will result in the production of offspring with two types of genotypes  WW and Ww.

Hence, all the fruit flies produced from this cross will have curly wings.

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.