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
Finance and Administration
The Finance and Administration Section Chief of the Incident Command System is split into four units:
1. Time Unit
Responsibility: Time recording of personnel
2. Procurement Unit
Responsibility: Contracts of Equipment rental supply
3. Compensation/ Claims Unit
Responsibility: Claims, Records, Compensation of workers
4. Cost Unit
Responsibility: Estimates collections. Monitor incident cost
Answer:
Which statement best describes properties of elements?
A. All elements have a similar structure and hardness.
A. All elements have a similar structure and hardness.
B. All elements have mass and occupy space.
B. All elements have mass and occupy space.
C. All elements are either metals or gases.
C. All elements are either metals or gases.
D. All elements are solid and magnetic.
D. All elements are solid and magnetic.
Explanation:
This problem is based on the Greenhouse effect.
CO2 is one of the Greenhouse gases.
Gasoline and diesel cars gasoline burns fossil fuel and produce a lot of CO2 increasing the Greenhouse effect.
The sentences of the statement for the this case may be ordered to describe very well what happens with the fossil fuels and their effect in the planet.
This is the right order:
1) fossil fuels burned to run vehicles release co2
<span>2) CO2
traps heat and warms the atmosphere.
</span>
<span>3) The global surface temperature increases
4) ice and snow in
polar regions melts.
5)</span><span><span> large amounts of freshwater flow into
the ocean
6) </span></span><span>sea levels rise.
</span>
<span><span />7) the island floods with seawater.
8) human life,
buildings, and infrastructure are at risk.
</span>
Given that a directional hypothesis is a prediction made by a researcher regarding a positive or negative change, relationship, or difference between two variables of a population, a two-tailed test is the perfect tool to validate it because a two-tailed test is designed to examine both sides of a specified data range.
So the final answer to this question is:
True.
