3 years ago

The pectoralis major muscle can be divided into groups of fibers superior. True or False

Biology

1 answer:

Dvinal [7]3 years ago

3 0

Answer: True

Explanation:

Pectoralis major is a thick, fan-shaped muscle contributing to the thoracobrachial motion. It consists of group of fibers superior, a clavicular part and a sternal part, both converging to a flat tendon that inserts on the humerus. It's engrafted by both medial and lateral pectoral nerves.

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2 years ago

In MendAliens, normal head top is dominant to Bart head top, in which the top of the head is jagged. Suppose a MendAlien homozyg

Dafna1 [17]

Answer:

The genotypes of the two parents: normal head shape (HH) and Bart head shape (hh)

The genotypes in the F1 generation= Hh

The phenotypes present in the F1 generation= All normal head shape

Explanation:

Let's assume that the allele "H" is responsible for the normal head shape while the allele "h" gives Bart head shape. According to the given information, both the parents are homozygous. The genotype of the parent with normal head shape would be "HH" while that of the one with Bart head shape would be "hh". Since the normal head shape is dominant, all the F1 hybrid progeny would exhibit "normal head shape".