1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kay [80]
2 years ago
15

A group of scientists determines that a mitochondrial DNA sequence shared by two species has a constant mutation rate. The seque

nces of mitochondrial DNA for the two species are shown below. Species A: GACTGGGCATTA Species B: GACCGGACATTA Based on this information, which of the following best explains the difference in the DNA sequence between the two species? Species A and B probably share the most recent ancestor because they only differ by three mutations. Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. Species A and B probably have distinct ancestors because they have many differences in mutations. Species A and B are closely related because they differ by five mutations in their DNA sequence.
Biology
1 answer:
grandymaker [24]2 years ago
7 0

Species A and B have fewer differences between DNA sequences means that fewer mutations occurred. It is likely due to sequence homo-logy.

<h3>Whta are mutations?</h3>

A mutation is any alteration in the nucleotide (DNA) sequence of the genome of a particular organism.

The linear order of nucleotides and their differences (mutations) can be used to infer homo-logy between two species.

In this case, there are only two different nucleotides in these sequences, thereby sequence homo-logy indicates a likely common origin.

Learn more about sequence hom-ology here:

brainly.com/question/9640986

You might be interested in
Which two factors may cause exponential growth in a given population?
Nikitich [7]
Adequate supply of food
absence of predators
4 0
2 years ago
when seen on a Wright-stained peripheral blood film, a young red cell that has just extruded (lost its) its nucleus is referred
Dima020 [189]

Answer:

When seen on a Wright-stained peripheral blood film, a young red cell that has just extruded (lost its) nucleus is referred to as a polychromatophilic cell.

Explanation:

On Wright-stained smears, slightly immature red cells that do not have nuclei (reticulocyte stage) look blue-gray because they still have some ribonucleic acid in them (RNA). These cells are commonly referred to as polychromatophilic cells. Most of the time, polychromatophilic cells are bigger than mature red cells, and their blue-gray color makes them different from macrocytes.  Polychromatophilic red cells also tend to lack the central pallor.

When the remaining mRNA and ribosomes are stained with supravital dyes, they make the red cells look like a "reticular" mesh network. This is how the name "reticulocyte" came about. It is to be noted that not all reticulocytes show up as polychromatophils when stained with Wright-Giemsa.

Learn more about peripheral blood smear here:

brainly.com/question/9750262

#SPJ4

8 0
2 years ago
Cross-over involves the exchange of genetic information between
Ksju [112]

2 Homologous chromosomes in meiosis, and then replicate into sister chromatids.

Hope this helps, ( or is clear enough ) if not, comment below please!!!!

3 0
3 years ago
The Fresh Kills Landfill is in the process of becoming a park. Some of the leftover gas underneath the landfill will be burned f
Readme [11.4K]

The correct answer choice which would be an environmental consequence of this is:

Increase in air pollution

<h3>What is pollution?</h3>

Pollution can simply be defined as the release of harmful or toxic substances to the environment which has adverse effects on the environment.

So therefore, the correct answer choice which would be an environmental consequence of this is:

Increase in air pollution

Learn more about pollution:

brainly.com/question/24704410

#SPJ1

5 0
2 years ago
This is an issue related to an individual or a relationship that can potentially cause concern or conflict.
sergey [27]
A Personal Issue is an issue that is then of an individual or also in a relationship causing then a potential conflict or concern. If this will not be resolve or if nothing will be done then it can lead to a big problem then.
4 0
3 years ago
Other questions:
  • Can something be created without atoms?
    8·2 answers
  • A ________ is any push or pull from one object to another
    12·2 answers
  • How can you tell the relative ages of rocks
    5·2 answers
  • Briefly discuss the current controversy about which complex organic molecules formed first: nucleic acids or proteins
    11·1 answer
  • Suppose you cross a pea plant with yellow, smooth seeds with one that has wrinkled, green seeds. You examine the seeds of 967 of
    13·1 answer
  • What is carried to the body cells by blood? pick 2
    7·1 answer
  • What is produced during the Krebs cycle
    10·1 answer
  • What is the difference between the grassland and savanna biomes?
    15·1 answer
  • How has artificial selection made
    10·1 answer
  • Select the correct answer.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!