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ddd [48]
3 years ago
14

The evolution of a species is dependent on changes in the genome of the species. Identify two mechanisms of genetic change, and

explain how each affects genetic variation.
Biology
1 answer:
adelina 88 [10]3 years ago
4 0

Answer:

Mutation, fertilization, meiosis are different mechanisms by which changes can occur in the genome.

Explanation:

There are several process which is responsible for causing change in the genome of the species which results in the evolution of that species. Some of these processes are:

1. Mutation: In mutation, some nucleotide sequences get change and this change can occur due to frameshift, addition, deletion or any other process. This change in nucleotide can be seen in phenotype and helps in the evolution of the species.

2. Fertilization: During fertilization mixing of the genome of two individual takes place which results in producing a genetically distinct offspring which contains variation. So as the offspring is genetically different it can contain new alleles that can help the individual to survive in the changing environment.

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Explain why chemogenetic based methods of regulating cellular signaling result in poor temporal control of biochemical pathways
makvit [3.9K]

Answer:

They use different detecting methods to assess neuronal circuits

Explanation:

Chemogenetics is a technique widely used in neuroscience research to explore signaling interactions by means of genetically modified receptors capable of interacting with small molecules. Chemogenetics was first used to determine the function of the chalcone isomerase gene by inducing mutations that altered its substrate specificity. On the other hand, optogenetics is a bioluminescence-driven genetic technique used to control genetically modified neurons that express light-gated ion channel genes. This technique is also used to monitor neuronal networks. In consequence, optogenetic and chemogenetic techniques have recently been combined in order to analyze neuronal circuits, it by analyzing the same actuator molecule.

4 0
3 years ago
A scientist wants to test how much of an acid can be added to a solution
notsponge [240]

Answer:

<em>B. Methyl yellow, which changes from yellow to red around a pH of </em>

<em>4.0</em>

Explanation:

A pH indicator is a technique by which the pH of a solution can be known. The scenario in the question describes that the scientist wants to determine a pH after it gets converted from 6 to below 4. For this recognition, the scientist should use a methyl yellow indicator which will change from yellow to red once a pH around 4 is achieved.

8 0
3 years ago
For the trait of color in these beetles, where brown (B) is dominant to green (g), what is the genotype ratio of the possible of
IceJOKER [234]

Answer:

B is the correct answers

Explanation:

75% brown and 25% green

4 0
3 years ago
18.) When and by whom was the idea of a spherical Earth first
Natasha2012 [34]
300 BC by Greek philosophers
7 0
3 years ago
What dies survivor ship curve mean? What an easy way to remember what it means?
vredina [299]
Survivorship curve = so, first of all, it's a curve, as in a graph.

It describes "survivorship" - the rate of survival, in other words: out of 100 organisms that are born, how many survive. This rate is different among species, for example, most humans live out to most of their life span, and almost all can survive well beyond a reproductive age.

However, in frogs for example, many many individuals are born, but only few can survive to adulthood: most die very young, before reproductive age.

So if you hear about a new species: let's say dogs, and you want to know how long they would live, you would look at their sirvivorship curve (and in some breeds of dogs, those that are likely not to be in shelters, but in homes, the survivorship curve would be similar as in humans: almost all individuals born can live long. 
6 0
3 years ago
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