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Ira Lisetskai [31]
3 years ago
10

Explain why DNA is called a molecular clock.

Biology
1 answer:
hammer [34]3 years ago
5 0

The molecular clock is a figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA or amino acid sequences for proteins.

Explanation:

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Which of these is accomplished by the interaction of haploid cells in sexually reproducing organisms? A. deletion of genetic mat
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The right answer is D.

A gamete is a generally haploid reproductive cell specialized in fertilization, or gamy (that is to say, able to fuse with another gamete, complementary type if necessary), in eukaryotes.

The process that carries out the fusion of two gametes is called fertilization or gamy, it is the complementary event of meiosis. Fertilization produces a new single cell, called a zygote, whose chromosome number has doubled to 2n.

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Naturally occurring methods of recombining DNA within a species to increase variation include all BUT
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My Answer: DNA cloning.

Hope I helped! :D
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7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?
nydimaria [60]
Kinetic energy = 0.5*M*V^2 

 Q7-
 
0.5*3*(2^2)= 6J

Q8a- 

0.5*2*(2^2)= 4J
0.5*4*(3^2)=18J 
the second ball has more kinetic energy.

Q8b-

at the max height, all the kinetic energy is converted to potential energy, 

gravitational potential energy is = M*g*h

that theory would apply if you wanted to work out the maximum height achieved if the balls were thrown upward by rearranging. But, we are simply working out which ball will have more potential energy so:

First ball:
2kg*9.81(g)*10m = 196.2J

Second ball
4kg*9.81*10m= 392.4J

The second ball has more potential energy 


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3 years ago
Which of the following is true about the inheritance pattern of a sex-linked trait?
bonufazy [111]
D. One sex has a higher chance to inherit it than the other (male).

These can be either recessive or dominant. We usually think more of the recessive traits like color blindness and hemophilia but dominant sex-linked traits also exist (fragile X).
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A Lunar Eclipse Must Occur During a ———- Phase Of The Moon.
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full coverage of the moon

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