<span>Theories concerning global climate change is
the most widely accepted is: b. Global climate is changing due to
burning of fossil fuels and deforestation.
</span>
During inhalation, you breathe in and this contracts the diaphragm and moves downwards. This increments the chest cavity space which means the lungs are expanding. The intercostal muscles or the muscles in between the ribs also aids in the enlargement of the chest cavity. Both muscles contract to pull your rib cage upward and outward when you inhale. As your lungs expand, air is sucked through your nose and mouth. It then travels down to the windpipe and into the lungs to the bronchus, bronchioles and eventually in the alveoli where air exchange between carbon dioxide and oxygen happens.
The additional accessory muscles of respiration are typically used only under conditions that are of high metabolic demand or respiratory dysfunction. However, in instances where these muscles become stiff and hard, expansion of the rib cage can be quite restricted. The accessory muscles of respiration include sternocleidomastoid and the scalene muscles namely anterior, middle and posterior scalene. Both aid in elevating the rib cage. However, their involvement seems to depend on the degree of respiratory effort. During quiet breathing, the scalenes are consistently active at certain phases while the sternocleidomastoid is quite.
<span> This is an example of a quantitative </span><span>observation</span>
Answer:
Proportion of the true breed purple-flowered progeny will be
Explanation:
Complete Question
In jimsonweed, purple flowers are dominant to white. Self-fertilization of a particular purple-flowered jimsonweed produces 28 purple-flowered and 10 white-flowered progeny. What proportion of the purple-flowered progeny will breed true?
Solution
Given -
Purple flowers are dominant to white colored flowers
In self fertilization, purple-flowered jimsonweed produces 28 purple-flowered and 10 white-flowered progeny.
Let purple color flower be represented by "P" and white colored flowers be represented by "p"
Pp * Pp
PP, Pp, Pp, pp
one out of four offspring is purple true breed (PP) in terms of genotype
One (PP) of the three types of genotype (PP, Pp, pp) is true purple breed
Thus proportion of the true breed purple-flowered progeny will be
The unbalanced translocation happens by altering the amounts of products of the genes involved in chromosomes which will cause to miscarriage congenital malformation, developmental delay, mental abnormality, which is basically abnormal baby, miscarriage, stillbirth, infertility.
