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torisob [31]
3 years ago
12

Hace cuanto se generó la vida en la tierra

Biology
1 answer:
arsen [322]3 years ago
4 0

Answer:

La vida en la Tierra. Los estudios de los fósiles de rocas antiguas nos revelan que la vida probablemente comenzó hace unos 4 billones de años, cuando la Tierra era muy joven. Nadie sabe cómo comenzó la vida en nuestro planeta. La mayoría de los científicos piensa que se originó en el agua líquida

Explanation:

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An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (na
polet [3.4K]

Answer:

Incomplete dominance

Explanation:

The traits in the organisms are controlled by the genes which are present in the form of two alleles on the chromosomes. Each allele represents the variant of the trait which is determined when these alleles unite during sexual reproduction.

The allele can be dominant when it shows its effect or it can be recessive when it is suppressed during fusion.

In the given question, the studied trait is the pattern of the hair which is present in two variants: the curly hair and the straight hair. When the parents for these traits were crossed they produced offspring which was intermediate between the curly and the white hair. This intermediate trait shows that neither of the two alleles which control the trait is dominant and the trait blended. This natural process is known as incomplete dominance.

Thus, Incomplete dominance is correct.

4 0
2 years ago
Calcium sulfide forms when calcium loses 2 valence electrons to sulfur. What type of a bond is formed? covalent ionic
il63 [147K]
A covalent bond is formed
4 0
3 years ago
Consider the predominant types of alternative splicing events that occur in mammals. Which of the following choices represent mR
Nataly_w [17]

As the question is incomplete i have added the complete question in ask for detail section.

Answer:

The correct options are:

A-C-E-G-I

A-C-E-I

A-C-G-I

Explanation:

Alternative splicing of RNA produces many mRNA strands from primary RNA transcript. When alternative splicing of RNA occurs, all the introns and some exons are removed. The removal of these exons produces different mRNA strands which are then translated into diffident kinds of proteins. Alternative splicing of RNA can highly increase the number of new produced proteins from same gene.

5 0
3 years ago
You eat a bowl of beans as part of vour dinner. As vou digest the beans, the proteins that are present get broken down to their
djyliett [7]

Answer:

Option C, No. The energy contained within these macromolecules is converted into other forms of chemical energy and kinetic energy, though some is lost as heat.

Explanation:

Breaking down of large molecules in to smaller molecules does not signify breaking down of energy stored in it and hence losing all the stored energy.  

Breaking down of large molecule is necessary to convert large molecules into small easily digestible molecules so that the food energy stored in them can be  stored  in some other form specifically chemical energy and can be used at later stages. However, in the process of conversion of large molecules into small molecules , a certain amount of heat energy is used.

Hence, option C is correct

6 0
2 years ago
HELP PLEASE
gregori [183]
Solar eclipses result from the Moon blocking the Sun relative to the Earth; thus Earth, Moon and Sun all lie on a line. Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.
3 0
2 years ago
Read 2 more answers
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