Answer:
Barr bodies are small bodies that are dark staining bodies that show the inactivated X chromosome, these sex chromatin bodies attach to the membrane of the nucleus of interphase cells.
One less of the total number of X-chromosome (n-1) represents the number of Barr bodies.
Then,
The number of Barr bodies with Klinefelter would be:
Klinefelter (47,XXY): (n-1) = (2-1) = 1 Barr body as here two X chromosome present.
Similarly, for
Turner (45,XO): (n-1) = (1-1) = 0 Barr bodies (X chromosome = 1)
Now, as per the question, the bar bodies for karyotypes given
47,XYY: (n-1) = (1-1) = 0 Barr bodies
47,XXX: (n-1) = (3-1) = 2 Barr bodies
48,XXXX: (n-1) = (4-1) = 3 Barr bodies
A. "In the distant future, we're all going to be crushed"
Explanation -
Oscillating Universe Theory combines the big bang theory and the big crunch theory. This theory states that the Universe does not have any end and it would undergo various epochs during this process.
It mentions that the Universe expands and contract where it becomes small and dense and will lead to a new beginning that will have a different property than the old universe. Some day, the universe is going to shrink and crush.
Answer: High
Explanation: High pressure systems are associated with fair weather because cool air is sinking. Also the humidity is lower and no air is rising, because there are no clouds forming.
Echolocation is a superior adaptation for insectivorous bats because these bats use the echo to locate the insects that are on the constant move. On the other hand, the fruit bats use other adaptations because fruits are stationary and so the fruitbats do not need echo to locate them. I hope the answer comes to your help.
