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he chromosomes labeled X an Y in the human karyotype are responsible for what traits?
a
The Y is the female trait and the X is the male trait.
b
Both X and Y chromosomes determine hair color.
c
The X is the female trait and the Y is the male trait.
d
Both X and Y chromosomes determine heigh **Weegy:** The chromosomes labeled X an Y in the human karyotype are responsible for what traits? c. The X is the female trait and the Y is the male trait. (More)

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Asked 1/28/2013 9:29:27 AM

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All radioisotopes decay at the same rate.
True
False
**Weegy:** All radioisotopes decay at the same rate. False . Each radionuclide decays at its own unique rate which cannot be altered by any chemical or physical process. **User:** Iodine-131 has a half-life of 8.07 days. What fraction of a sample of iodine-131 is left after 16.14 days?
a 1/16
b 1/4
c 1/8
d 1/2
**Weegy:** Iodine-131 has a half-life of 8.07 days. After two half-lives, or 16.14 days, the fraction of iodine-131 remaining is one quarter (b). **User:** The experiment that produced the first artificial transmutation also provided evidence that the nucleus contains ____________ .
a neutrons
b protons
c quarks
d electrons
**Weegy:** The experiment that produced the first artificial transmutation also provided evidence that the nucleus contains neutrons. The first ever artificial transmutation was carried out by
Rutherford in 1919. **User:** Which was the first transuranium element to be synthesized?
a americium
b plutonium
c neptunium
d technetium
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Asked 1/28/2013 12:18:35 PM

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Comparing the level of carbon-14 in an object to the level of carbon-14 in the atmosphere is used to determine what?
a radioactive dating
b its half life
c rate of decay
d radiocarbon dating
**Weegy:** Comparing the level of carbon-14 in an object to the level of carbon-14 in the atmosphere is used to determine radiocarbon dating.
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Asked 1/28/2013 12:54:52 PM

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Name the property of real numbers illustrated by the equation 3(2x – 14) = 6x – 42.
A.
Distributive Property
B.
Identity Property of Addition
C.
Commutative Property of Multiplication
D.
Associative Property of Multiplication
**Weegy:** The answer is Associative .
Associative Property of Multiplication
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Asked 1/28/2013 8:54:35 PM

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The length of an object's shadow varies directly with its height. A boy who is 4 feet 6 inches tall casts a shadow that is 6 feet 3 inches long. What is the height of a tree that casts a shadow that is 25 feet long?
A.
18 ft
B.
20 ft
C.
16 ft
D.
216 ft
**Weegy:** the height of a tree that casts a shadow that is 25 feet long B. 20 ft (More)

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Asked 1/28/2013 9:37:44 PM

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