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
mihalych1998 [28]
3 years ago
7

• describe how heterozygote advantage and frequency-dependent selection promote balanced polymorphism and maintains genetic dive

rsity.
Biology
1 answer:
cestrela7 [59]3 years ago
8 0

Answer;

Heterozygote advantage occurs when heterozygotes have a higher fitness than do both homozygotes. In frequency-dependant selection, the fitness of a phenotype declines it it becomes too common in the population.

Explanation;

The heterozygotes have both alleles, which is needed for genetic variation. Heterozygotes are essential for there to be genetic variation in a population. In other words it is when When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. For example a sickle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.

-Frequency-dependent selection occurs when the fitness of a genotype depends on its frequency. It is possible for the fitness of a genotype to increase (positively frequency-dependent) or decrease (negatively frequency-dependent) as the genotype frequency in the population increases.

You might be interested in
What are the similarities and differences between the whale fossils?
Andrei [34K]
<span>All of their skulls were fairly long with sharp teeth.</span>
5 0
3 years ago
Read 2 more answers
figure 6 DNA, which is made up of atoms of nonmetals, is essential to life. list at least two other substances essential to life
kow [346]

Answer:

Glucose

Oxygen gas

Explanation:

Glucose is a non-metallic carbohydrate substance. It is the monomeric unit of the digestion of complex carbohydrate.

This compound is very important to all lives. The energy needed to power the activities in the body are derived from the compound.

It is made up of carbon, hydrogen and oxygen atoms.

Also, oxygen gas is used by animals for their metabolic processes. The gas combines with glucose to release chemical energy for use in the body. This molecule is purely made up of two atoms of oxygen that are covalently bonded together.

Anytime we breathe, we take in oxygen for use in our body

7 0
2 years ago
Cacti in the deserts of southwestern North America and some euphorbs of the deserts of Africa, have barrel-shaped stems, short-l
nirvana33 [79]

Answer:

       The right answer to this question is option D. Convergent evolution.

Explanation:

       Convergent evolution is a process defined by when an organism develops the same, or at least near that, characteristics, for a specific reason, but they don't have the same origin. In this case, the cacti in both deserts have pretty much the same characteristics, and this happens because both these plants need water to survive, and in order to save it, they have barrel-shaped stems, short-lived leaves, and spines. All of these things help them in saving the water and capturing it when it's possible.

        The convergent evolution is when both these organisms develop equally, but are not originally from the same place, the environment being the one to shape this.

3 0
3 years ago
12. If an ecologist is looking at how many individual organisms live within a certain population, he or she is studying the popu
sukhopar [10]

The answer would be C or Population Density

7 0
3 years ago
Read 2 more answers
Um dos princípios da Termodinâmica pode ser enunciado da seguinte forma: "É impossível construir uma máquina térmica operando em
77julia77 [94]

Answer:

A energia térmica não pode ser criada nem destruída, apenas convertida em outras formas de energia.

Explicação:

Os princípios da termodinâmica nos levam a concluir que a energia térmica não pode ser criada nem destruída apenas convertida em outras formas de energia. Essa energia térmica pode ser convertida em energia mecânica, elétrica e outras formas de energia. A energia térmica também é liberada quando o alimento ingerido pelos herbívoros, apenas 10% da energia é transferida de um nível trófico para outro, enquanto 90% da energia é liberada para a atmosfera.

6 0
2 years ago
Other questions:
  • How were Redi’s and Pasteur’s experiments similar?
    11·2 answers
  • A flowering containing make and female parts is called
    13·2 answers
  • Ted believes that alcohol is a stimulant, but his friend Dani is trying to convince him that alcohol is a depressant that produc
    7·1 answer
  • Airplanes reach cruising altitudes at the lower part of the Earth's stratosphere. This portion of the atmosphere is made up most
    6·1 answer
  • Chromium deficient animals show a decrease glucose tolerance.
    14·1 answer
  • A population of ground mice consist of 500 individuals. You are interested in the gene that codes for for a color and find out t
    15·1 answer
  • I need help to get the right question because i got it wrong
    7·1 answer
  • If cellular respiration changes, the need for oxygen also changes.<br> O True<br> O False
    10·1 answer
  • The backbone of a nucleic acid molecule is made of
    7·1 answer
  • In domestic swine there is a dominant allele which produces a white belt around the body. The recessive allele produces uniform
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!