9. El color azul de los ojos en el hombre se debe a un gen recesivo. Los padres de un varón de ojos azules tienen los ojos pardos. a) ¿Cuáles son sus genotipos?, ¿Qué probabilidad hay de que un segundo hijo tenga
los ojos pardos? b) El hijo de ojos azules anterior se casa con una mujer de ojos pardos cuyos padres tienen
ojos azules y ojos pardos, y que tiene un hermano de ojos azules. El matrimonio formado tiene un hijo de
ojos pardos, ¿cuáles son los genotipos de los padres de la esposa, de los esposos y de su hijo?.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

substitution is the answer in this case