Consider the x-linked dominant disorder congenital generalized hypertrichosis (cgh). what can you determine about the potential offspring of a couple in which the father has cgh and the mother does not?

***See attached picture***

For any question asking you to draw conclusions about the offspring of two parents, you should always start by making a Punnett Square. This will allow you determine the potential genotypes of the offspring. Here are your steps to making the Punnett Square:

1. Set up a key that states dominant vs recessive alleles and the associated phenotypes/traits. (***see pic***)

2. Determine the genotypes of the parents.

Sometimes this will be given, sometimes you will have to do a little detective work to figure it out. In this case, you have to figure it out using the given info:

We know that the disorder (cgh) is X-linked and caused by the dominant allele. Therefore, X^D = individual has cgh.We know that the father (XY) has the disorder (cgh), so his genotype must be (X^D,Y)We know the mother does not have the disorder. Therefore her genotype MUST BE (X^d,X^d). If she even had one dominant allele (X^D) then she would have the disease. Since she doesn't she must have two recessive alleles.

3. Using genotypes of parents, set up Punnett Square. (***see pic***)

4. Make conclusions from Punnett Sqaure. (***see pic***)

Conclusion: After filling out the Punnett Square, you only get two potential genotypes for the offspring: (X^d,Y) and (X^D,X^d).

This means...

Half of offspring would have disorder (X^D,X^d), half of offspring would not have disorder (X^d,Y). Furthermore, all female offspring will have disorder (X^D,X^d), and all male offspring will not have disorder (X^d,Y).

Mantle convection  is the slow  creepingmotion of earth's solid silicate  mantle  caused by  convection  currents carrying  heat from the interior  to the planet's surface.[1][2]  the earth's surface  lithosphere, which rides atop the  asthenosphere  (the two components of the  upper mantle), is divided into a number of  plates  that are continuously being created and consumed at their opposite  plate boundaries. accretion occurs as mantle is added to the growing edges of a plate, associated with  seafloor spreading. this hot added material cools down by  conduction  and  convection  of heat. at the consumption edges of the plate, the material has thermally contracted to become dense, and it sinks under its own weight in the process of  subduction  usually at an  ocean trench.[3]this subducted material sinks through the earth's interior. some subducted material appears to reach the lower mantle,[4]  while in other regions, this material is impeded from sinking further, possibly due to a phase transition from  spinel  to  silicate perovskiteand  magnesiowustite, an  endothermic reaction.[5]the subducted oceanic crust triggers  volcanism, although the basic mechanisms are varied. volcanism may occur due to processes that add buoyancy to partially melted mantle causing an upward flow due to a decrease in density of the partial melt.secondary forms of convection that may result in surface volcanism are postulated to occur as a consequence of intraplate extension[6]  and  mantle plumes.[7]it is because the mantle can convect that the  tectonic plates  are able to move around the earth's surface.[8]mantle convection seems to have been much more active during the  hadean  period, resulting in gravitational sorting of heavier molten  iron, and  nickel  elements and  sulphides  in the core, and lighter  silicate minerals  in the  mantle.