Answer:
Species interactions within ecological webs include four main types of two-way interactions: mutualism, commensalism, competition, and predation (which includes herbivory and parasitism).
Explanation:
Answer:
True
Explanation:
The Drosophila like the mammals possess X and Y chromosomes but as in males in which the XX is female and XY is male, the sex In Drosophila is not determined by the presence of Y chromosomes as a male determining factor are present on the autosomes.
However, the Y chromosome is important for males as they are involved in the formation of the sperms therefore the presence of Y is important. In the given question if the allele is present ion the Y chromosome which can reduce the size therefore the allele is passed on to the males only ans no females.
Thus, true is the correct answer.
the fly is female (Bridges 1921, 1925). Thus, XO Drosophila are sterile males. In flies, the Y chromosome is not involved in determining sex. Rather, it contains genes active in forming sperm in adults.
The act of clapping your hands out in front of you with your elbows fully extended is achieved by contracting the pectoralis major muscles.
The pectoralis major muscle is a thick, large fan-shaped muscle that is located in the chest area of the human body. The pectoralis major is the most superficial muscle in the chest area and its functions is associated with the movement and rotation of the shoulder joint. Body movements such as extending the arm across the front part of the body, lowering the arm to the back part of the body, and rotating the upper arm in an inward manner are achieved by the pectoralis major muscles.
Answer:
Doctors prescribe them to treat problems such as delayed puberty and other medical problems that cause the body to make very low amounts of testosterone. Steroids make muscles bigger and bones stronger. They also may cause puberty to start and can help some boys who have a genetic disorder to grow more normally.
