4 years ago

Why would oceanic crust subduct underneath continental crust

2 answers:

6 0

The process by which the oceanic crust is pulled under the continental crust is called subduction and the zone at which this occurs at the plate boundaries is called the subduction zone.

almond37 [142]4 years ago

4 0

This is because the rocks that form the oceanic crust are denser and are thinner than the rocks that form the continental crust.

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Why doesn't all radiation directors at earth reach the surface

sdas [7]

Because of earths magnetic field and atmosphere

3 0

3 years ago

Parents that are heterozygous for having freckles (dominant) are crossed.

sergiy2304 [10]

Answer:

Phenotypic ratio - 3 Freckes : 1 No freckles

Explanation:

This question represents a monohybrid cross i.e. involving a single gene coding for possession or not of freckles. The allele for possession of freckles (F) is dominant over the allele for no freckles (f).

In a cross between two HETEROZYGOUS parents i.e. Ff × Ff, each parent will produce gametes with alleles F and f respectively. Using a punnet square (see attached image), four possible offsprings will be produced with genotypes: FF, Ff, Ff and ff.

Based on this genotypes, the phenotypic ratio of the offsprings will be 3:1 where 3 offsprings will possess freckles and 1 will have no freckles.