Answer:
Option D
Explanation:
Options for the question
A) The Y chromosome is slower to mature than the X chromosome.
B) Replication of the X chromosome occurs more often in males.
C) Male hormones cause the expression of X-linked traits.
D) Males only have one copy of the X chromosome
Given-
Duchenne muscular dystrophy (DMD) is an X-linked recessive condition which means it will occur in male even if they have one diseased X gene. While females will have this disease only when they have two diseased X gene
Hence, in most of the cases women with only one diseased X chromosome act as carrier and show normal traits.
Let us assume X is normal gene and X' is the diseased gene then
Genotype of normal father will be - XY
Genotype of carrier mother will be - XX'
Now if these two mates, following offspring will be produced
XY * XX'
XX, XX', XY, X'Y
So the male with X'Y will have DMD
Hence, option D is correct
<span>The Chemical Senses: Taste and Smell. Taste. The stimuli for taste are chemical substances dissolved in water or other fluids. Taste can be described as four basic sensations, sweet, sour, salty, and bitter, which can be combined in various ways to make all other taste sensations. Hope this helps!</span>
Capital formation improves the conditions and methods for the production of a country. Hence, there is much increase in national income and per capital income. This leads to increase in quantity of production which leads to again rise in national income. The World Bank tracks gross capital formation, which it defines as outlays on additions to fixed assets, plus the net change in inventories. Fixed assets include plant, machinery, equipment, and buildings, all used to create goods and services. Inventory includes raw materials and goods available for sale.Oct
$8.25
We can use a proportion.
6/5.5=9/x
Cross multiply: 6x=9(5.5)
6x=49.5
X=$8.25
Answer:
x+y = 12 (the sum of 2 unknown integers)
x-y = 6 (the difference of the 2 ints)
you just need to solve this for x and y. you can do this using substitution.
x + y = 12
x - y = 6 ---> x = y+6
(y+6) + y = 12
2y = 6
y = 3
x = 9 ---> when we plug in y to x+y = 12 we get x = 9
Explanation:
