I’m not exactly sure, but I’m thinking it may be A . I just learned about this unit previously .
The phenotype ratio would be 25% each for widow's peak and freckles, widow's peak without freckles, straight hairline with freckles, and straight hairline without freckles.
<h3>Dihybrid crossing</h3>
Genotype of the heterozygous parent: HhFf
Genotype of the other parent = hhff
Crossing the two parents:
HhFf = 1/4 = Widow's peak, freckles
Hhff = 1/4 = Widow's peak, no freckles
hhFf = 1/4 = straight hairline, freckles
hhff = 1/4 = straight hairline, no freckles.
More on dihybrid crossing can be found here:brainly.com/question/1185199
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The right option is; ice sheets
The only ice sheets that exist today are found in Greenland and Antarctica.
Ice sheets are masses of glacial ice that covers more than 50,000 square kilometers. The only ice sheets that exist on earth currently are found in Greenland and Antarctica. This two ice sheets contains most of the freshwater ice on earth. Ice sheets are formed during winter when snow falls and partially melts over the summer. The snow then accumulates to form dense and thick masses of glacial ice.