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erastovalidia [21]
3 years ago
8

Please someone help!Humans have been modifying genetics for thousands of years through the process of _________

Biology
1 answer:
kozerog [31]3 years ago
7 0
Genetic modification
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After examining the fossil record, scientists have determined that scorpions today are much smaller than their extinct ancestors
BabaBlast [244]

Answer: C. scorpions have changed as a result of natural selection

Explanation:

The text tells us that scorpions today are now smaller than they were in the past. This means that the scorpions have changed since then i.e. they have evolved.

The primary reason for evolution is natural selection which refers to a situation whereby only the organisms that are better adapted in their species survive.

The conclusion that can be drawn from this research therefore is that we have smaller scorpions today because they stood a better chance of survival than the larger ones and so survived whilst the larger ones died out.

6 0
3 years ago
Identify how the deletion of a single nitrogen base in DNA can cause a harmful mutation in an organism.
ra1l [238]

Answer:

B. Nearly every amino acid translated after the error will create the wrong protein after the deletion of a base.

Explanation:

Generally, mutations occur in two ways: 1) a base replacement, where one base is replaced for another; 2) insertion or deletion, where a base is either incorrectly inserted or deleted from a codon.

When a nucleotide is wrongly inserted or deleted from a codon, the effects of this change can be extreme. An insertion or deletion can affect every codon in a particular genetic sequence.  For example, given the code:

GAU GAC UCC GCU AGG. It is the codes for the amino acids aspartate, aspartate, serine, alanine, and arginine. If the A in the GAU were to be deleted, the code would become GUG ACU CCG UAG G. It won't produce any right amino acid.

So, if the code becomes changes, it won't produce any amino acid or will produce the wrong amnio acid.

8 0
3 years ago
The four major functions of hormones are?
Hoochie [10]
  1. <em>Estrogen.</em>
  2. <em>Progesterone.</em>
  3. <em>Prolactin.</em>
  4. <em>Testosterone.</em>

<em />

<em>A/N</em><em>: hope this help  </em>

7 0
3 years ago
It is possible for more than one counterculture group to exist inside of a subculture. T/F?
Vladimir [108]

Answer:

true

Explanation:

5 0
3 years ago
Read 2 more answers
What is recombination genetic variaton
ANTONII [103]
<h2>Answer and Explanation </h2>

The genetic recombination is a biological process in which the recombination of homologous DNA strand occurs. There are three types of genetic recombination in human being that is :

Human Reproducation that is by introducing new gene combination to the population.

By cell Mutation is it  that is changes in the DNA.

By Gene flow it is that is by movement of a gene from one population to another population.


8 0
2 years ago
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