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
Vladimir79 [104]
3 years ago
12

Sarah and John are having a discussion on genetic diversity. Sarah believes that it happen over a long period of time. John it h

appens immediately. Who is correct? A. Sarah is correct because genetic diversity occurs over a long period of time.
B. John is correct because genetic diversity occurs immediately.
C. Both are correct because genetic variation can occur or long period of time.
D. Neither are correct because genetic diversity occurs over any period of time
Biology
1 answer:
professor190 [17]3 years ago
4 0
Sarah is correct because genetic diversity occurs over along period of time
You might be interested in
Wha is contained in chromosomes
Iteru [2.4K]

Answer:

genes

Explanation:

chromosomes contain genes

5 0
2 years ago
Read 2 more answers
Which of the following statements best exemplifies the difference between a population and an individual?
Misha Larkins [42]

Answer:

d. All of the above exemplify the difference between a population and an individual.

Explanation:

A population is a group of individuals of the same species that live in a particular geographical area and are able to interbreed. A population is described with respect to several features such as death and birth rates, age structure, density, dispersion, change in the population size due to density-dependent and density-independent factors and the survivorship curve.

These features are not exhibited by a particular individual. Natural selection also works at populations. The evolutionary forces act upon populations to change their allele and genotype frequencies. Therefore, populations are the unit of evolution and change genetically over time, not the individuals. Population ecology studies the size of a populations and the trends and causes of changes in the populations over time.

5 0
3 years ago
Name the four levels of structure of proteins and explain what each level is responsible for adding to the protein structure.
erik [133]
Tertiary Structure<span> - refers to the comprehensive 3-D structure of the polypeptide chain of a </span>protein<span>. There are several types of bonds and forces that hold a protein in its tertiary structure. </span>Hydrophobic interactions<span> greatly contribute to the folding and shaping of a protein. The "R" group of the amino acid is either hydrophobic or hydrophilic. The amino acids with hydrophilic "R" groups will seek contact with their aqueous environment, while amino acids with hydrophobic "R" groups will seek to avoid water and position themselves towards the center of the protein. </span>Hydrogen bonding<span> in the polypeptide chain and between amino acid "R" groups helps to stabilize protein structure by holding the protein in the shape established by the hydrophobic interactions. Due to protein folding, </span>ionic bonding<span> can occur between the positively and negatively charged "R" groups that come in close contact with one another. Folding can also result in covalent bonding between the "R" groups of cysteine amino acids. This type of bonding forms what is called a </span>disulfide bridge<span>. </span>Primary Structure - describes the unique order in which amino acids are linked together to form a protein. Proteins are constructed from a set of 20 amino acids. <span>All amino acids have the alpha carbon bonded to a hydrogen atom, carboxyl group, and amino group. The </span>"R" group<span> varies among </span>amino acids<span> and determines the differences between these protein monomers. The amino acid sequence of a protein is determined by the information found in the cellular</span>genetic code<span>. The order of amino acids in a polypeptide chain is unique and specific to a particular protein. Altering a single amino acid causes a </span>gene mutation, which most often results in a non-functioning protein.
<span>Secondary Structure - refers to the coiling or folding of a polypeptide chain that gives the protein its 3-D shape. There are two types of secondary structures observed in proteins. One type is the alpha (α) helix structure. This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. The second type of secondary structure in proteins is the beta (β) pleated sheet. This structure appears to be folded or pleated and is held together by hydrogen bonding between polypeptide units of the folded chain that lie adjacent to one another.
</span><span>Quaternary Structure - refers to the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. Each polypeptide chain is referred to as a subunit. Proteins with quaternary structure may consist of more than one of the same type of protein subunit. They may also be composed of different subunits. Hemoglobin is an example of a protein with quaternary structure. Hemoglobin, found in the blood, is an iron-containing protein that binds oxygen molecules. It contains four subunits: two alpha subunits and two beta subunits.

I hope this helped you find the answer you were looking for!

</span>
3 0
3 years ago
In your own words, describe what heredity is and how it works in mice!
maksim [4K]
Heredity is the passing of physical characteristics unto the next generation a mouse for example might have brown fur the mouse he "gets busy with" also has brown fur likely hood of the baby having brown fur is a high likley hood  hence you can say that the baby mouse has brown fur because of the heredity of his parents<span />
8 0
3 years ago
Read 2 more answers
Producers, primary consumers, and secondary consumers are examples of ___________________ levels.
Delvig [45]

Answer: Trophic

Explanation:

5 0
2 years ago
Other questions:
  • Which element is found in proteins and nucleic acids but not in carbohydrates
    7·1 answer
  • What is the type of bacteria that digest the milk sugar lactose??
    8·1 answer
  • Which of the following is true about science?
    7·1 answer
  • Is water stored on earth and carbon cycle?
    8·1 answer
  • Injury to cervical vertebra C3-C4 is particularly problematic because ________.
    9·1 answer
  • At birth Himalayan rabbits are usually
    12·1 answer
  • Which best describes an acid?
    8·1 answer
  • HI GUYS ........................................................................................................................
    13·1 answer
  • Why is deletion mutation beneficial?
    5·1 answer
  • The bones from an animal found at an archaeological dig have a C614 activity of 0.10 Bq per gram of carbon. The half-life of C61
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!