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
<h2>Corn is a crop that grows best in soil that drains well.</h2><h2 /><h2>Which of the following soils is best suited to grow corn?</h2>
<h3><em><u>The ideal soil for corn is well drained and </u></em><em><u>fertile </u></em><em><u>which</u></em><em><u> </u></em><em><u>is </u></em><em><u>Loam </u></em><em><u>Soil.</u></em><em><u> </u></em></h3>
Currently, Trump has 60 electoral votes and Clinton has 48.
Hurricanes are formed in tropical places. And hurricanes and thunderstorms are two totally different things! And so the best answer is C. I hope this helped u!
