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babymother [125]
2 years ago
14

The ability for people to roll their tongue is dominant to people who cannot. If a tongue roller and a non-tongue roller were cr

ossed, the highest percentage of potential non-tongue roller offspring would be which of the following?
A) 50%
B) 0%
C) 100%
D) 25%
Biology
1 answer:
Juli2301 [7.4K]2 years ago
3 0

Answer:

option A 50%

Explanation:

Ability to roll the tongue is dominant to people who cannot. thus only one copy is needed for the trait to be expressed. Thus, a tongue roller could be XTXT, XTXt or XTY and a non could be XtXt and XtY.

Thus one can have the highest percentage of non-tongue roller to be 50% which is from a cross between a tongue roller male and a non tongue roller female.

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Which of the following best explains how hydrogen bonding aftects the heat of vaporization for water?
dlinn [17]

Answer: A. The hydrogen bonds cause water to resist a change in temperature.

Explanation:

Heat of vaporization is defined as the amount of heat required to convert 1 mole of liquid to gaseous state.

Water has high heat of vaporization due to the presence of strong hydrogen bonds between  hydrogen and a electronegative element oxygen. As the water molecules are strongly bonded to each other, large amount of heat is required to raise the temperature of water.

The molecules will not be able to gain enough kinetic energy and thus temperature changes slowly.

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3 years ago
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Answer:

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2 years ago
How can it be possible that scientists do not currently have fossil evidence for every organism that once lived?
olya-2409 [2.1K]

Answer:

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Explanation:

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How to drugs taht suppress nerve activity lead to seizures?
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Lithium, some antibiotics, ingesting large amount of  penicillin <span />
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3 years ago
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levacccp [35]
The easiest example here is a computer/laptop... e.g. when the CD-ROM is spinning when you are perhaps playing a movie, the kinetic energy causes friction, which results in heat.  All computers need a fan to prevent them over-heating for this very reason.  Therefore heat is lost and energy is wasted.

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These are just a few examples but other ones you could use are tv screens, kettles, toasters, etc :)
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3 years ago
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