Answer:
Contains large polytene chromosome that permit visual inspection of genomic events.
Were used to study the genetic effects of mutations.
Were used to establish the concept of chromosomal inheritance.
Explanation:
<em>Drosophila melanogaster </em>is a model organism that is used by scientists to study the genes and effect of a mutation on the genes. Drosophila is used as a model organism as it has a very short life cycle and the offspring can be produced in a short duration of time.
Because of these characteristics, Thomas Hunt Morgan wanted to study the factors of inheritance on the <em>Drosophila</em> and concluded in the form of the chromosomal theory of inheritance by the effect of mutation on genes that lead to linkage mapping.
Also, the salivary gland of fruit fly contains the polytene chromosome which allows us to look into the gene events.
Thus, the selected options are correct.
In the food chain, animals such as mice eat grass and therefore, a fox needs the grass as much as the mice
Highlighted artery is right coronary.
<h3>
What is artery?</h3>
- The blood channels that carry oxygen-rich blood from the heart to the body's tissues are called arteries.
- Each artery consists of three layers and is a muscular tube bordered by smooth tissue.
- The endothelium, a smooth tissue, lines the intima, the inner layer.
- Blood is transported from your heart through arteries.
- All body parts have arteries, with the exception of the hair, nails, epidermis, cartilages, and cornea.
- In the limbs, they run along the flexor surface, where they are less vulnerable to injury, and the larger trunks typically occupy the most protected positions.
- A conduit that carries blood from the heart to the body's extremities is called an artery.
- Every artery, with the exception of the pulmonary artery, carries oxygenated blood.
- The ascending aorta, aortic arch, thoracic aorta, and abdominal aorta are the four divisions of the aorta, which is the biggest artery in the body.
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