The wife was born with a certain type of glaucoma, and thus she carries a dominant gene on one of her chromosomes for that condition. Her husband does not have the condition. Only one of the chromosome pairs needs to carry the gene for the person to have glaucoma. Complete the following grid to determine the chances for each of their children to be born with glaucoma. D indicates the gene that carries glaucoma. n indicates a normal gene, which does not carry glaucoma. The wife is shown as Dn. The husband is shown as nn. Wife

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.