Red-green colorblindness is caused by a recessive X-linked allele (rg). The dominant allele (RG) at this gene locus confers normal red-green color vision. Blue color blindness is a different form of defective color vision caused by an autosomal gene. The rare dominant allele (B) causes an inability to see the color blue, while the recessive allele (b) confers normal blue color vision. A woman who is heterozygous at both loci has a child with a man who has red-green colorblindness but is normal for blue vision (as in the question above). What is the probability they will have the following: A son who is red-green and blue colorblind

the probability of a red-green and blue colorblind child is 1/8

Explanation:

We know according to the exercise that we parents have

XRG Xrg (Bb) (woman) x (man) Xrg (b)

the data is as follows

X-linked recessive allele (rg)

dominant allele (RG) normal vision

blue disability dominant allele (B)

blue normal vision recessive allele (b)

Xgr B. Yb

XGR B. XRGXrg(Bb) XRGY(Bb)

XGR b. XRGXrg(bb) XRGXrg( bb)

Xgr B. XrgXrg( Bb) XrgY(Bb)

Xgr b. XrgXrg(bb) XrgY( bb)

As we can see in the previous graph, the probabilities that we can have are registered and that the probability of having a child with the characteristic colorblind red-green and blue or XRGY (Bb) will be 1/8

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.