Sesamoid bones occurring in some tendons function to

1 answer:

8 0

<span>Sesamoid bones are small masses embedded in some tendons and are usually located in places where a tendon passes over a joint.Their functions are to adjust the pressure, to decrease friction, and to change the direction of a muscle pull.Thus, protecting the tendon, and improving its mechanical function.</span>

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In horses, the allele for a black coat (B) is dominant over the allele for a brown coat (b). A cross between a black horse and a

GaryK [48]

Answer:

Bb X bb

Explanation:

It is given that the allele B for the black coat is dominant over allele b for a brown coat.

A dominant allele always leads to the expression of the dominant trait in the heterozygous condition.

When a black and brown horse is crossed as given in the question and the result is a brown foal, then the genotype of the brown foal must be bb as the brown coat is a recessive trait.

Since each parent contributes one allele each for a given gene, the black horse must have b allele, and hence must be heterozygous Bb.
The cross is shown in the punnett square.

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of the two cells represented in the figure, which would likely be more efficient at exchanging substances with the surrounding e

tia_tia [17]

Cell A is more efficient at exchanging substances due to larger surface area to volume ratio.

Cell A is more efficient at exchanging substances with the surrounding environment than cell B because it has the larger surface-area-to-volume ratio. Larger surface area of the cell exchanges more substances with the surrounding environment while on the other hand, lower surface area of the cell exchanges less materials with the environment so we can conclude that cell A is more efficient at exchanging substances due to larger surface area to volume ratio.