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
vladimir2022 [97]
3 years ago
8

As a fertilized egg divides , the cells differentiate because they

Biology
1 answer:
Arada [10]3 years ago
8 0

Answer:

As a fertilized egg divides, the cells differentiate because they have to become [different] specialized cells to perform different functions.

Explanation:

The molecules of DNA of a human have to be duplicated over end over so that every human’s cell contains a copy of DNA that can be found in a fertilized egg.

When cell differentiates, the embryonic cell becomes a specialized cell. This leads to an expression of gens and that is what dictates the functioning of one cell.

You might be interested in
What happens if a dominant trait is passed to the offspring of one parent and a recessive trait for the same trait is passed to
Deffense [45]
So let's say the letter is D and d, of course lower case is the recessive and uppercase is the dominant trait.

The dominant trait is the stronger Gene who's trait will usually show in a hybrid phenotype.

The recessive trait is the weaker Gene who is trait is usually Hidden and a hybrids phenotype.

1 domaint and 1 recessive trait meaning it is,

Dd

According to to Mendel's Principle of Dominance,

Offspring that are hybrid for a trait will have only the dominant trait in the phenotype and then vice-versa.

In this situation, again we have a dominant and recessive trait meaning it is Dd meaning it is,

Heterozygous (hybrid)

I hope that helped you out!!

Any questions, feel free to ask me!!
6 0
3 years ago
In eukaryotic cells, mRNA is made in the <br><br> a<br> nucleus<br> b<br> cytoplasm
Setler [38]

Answer:

A I think I may be wrong 17 more days until Christmas

6 0
3 years ago
Read 2 more answers
Please help! Best answer gets brainlyest! (Plus 25 points)
erica [24]

Answer:

3 alleles is the correct answer . Blood types = A , B , AB and O .

Explanation:

Human blood type is determined by codominant alleles. There are three different alleles, known as IA, IB, and i. The IA and IB alleles are co-dominant, and the i allele is recessive. The possible human phenotypes for blood group are type A, type B, type AB, and type O.

4 0
2 years ago
Read 2 more answers
In which row are the parts of the neuron below correctly labeled
Shkiper50 [21]
There’s no diagram shown.
4 0
3 years ago
In a species of plant-eating land snail, the shell color is variable and ranges from very light to intermediate to very dark in
Andre45 [30]

Answer and Explanation:

Natural selection is the result of the phenotype-environment interaction which determines gene destiny in space and time, selecting beneficial alleles and increasing their frequency in the population. There are different types of natural selection: sexual selection, stabilizing selection, directional selection, frequency-dependent selection, and disruptive selection.  

<em>a. What type of selection do you predict for the snails initially?</em>

    Initially, Directional Selection was acting.

Directional selection increases in the proportion of individuals with an extreme phenotypic trait, in the exposed example this trait is the dark shell. This selection occurs more frequently in those cases in which interactions between living organisms and the environment modify in the same direction. Initially, snails were living in an area where plants were all dark-colored, and in order not to be seen by the birds that preyed on them, directional selection acted on the snails to turn them dark-shelled, so they camouflaged better with vegetation and avoided being eaten by birds.    

<em>b. How about when they moved to the island?</em>

  When they moved to the island, Disruptive Selection was acting.

The disruptive selection causes an increase in the two types of extreme phenotypes over the intermediate forms. In the exposed example the extreme phenotypes were <em>light-shelled and dark-shelled.</em> Limits between one extreme and the other are frequently very sharped. Individuals belonging to one phenotype can not live in the same area as individuals belonging to the other phenotype, due to the traits differences between them, competition, predation, etcetera.  In the exposed example, when snails went to the island, where there was light and dark vegetation, and there were also birds as predators. As snails ate both types of plants, they had to camouflage by turning either light-shelled or dark-shelled. So those dark individuals could only live on dark plants, and light individuals could only live od light plants. In this way, they could avoid predation by birds, because they could not be seen.

d. Graph what is the population of the snail species looks like overtime before they are moved to the island.  In the attached file you will see that the curve tends to be in one of the extremes, the one that corresponds to the dark phenotype.  The red arrow is indicating the direction of the change. Intermediate individuals tend to be in the middle of the space, while light individuals are located in the other extreme. The Y-axe represents the percentage of individuals of each phenotype that got to survive over time. The chart shows that only dark individuals survived, while light and intermediate decreased to near cero probably due to predation.

e. Graph what they will look like over time when they moved to the island. In the attached file. You will see that the curve tends to be divided, showing maximums in the extremes of the X-axe, which corresponds to light individuals in one of the extremes and dark individuals in the other extreme. The red arrows are indicating the direction of the change. Intermediate individuals tend to be in the middle of the space, where you can see that the percentage of surviving individuals is almost cero. The intermediate phenotype did not get to survive to predation. The chart shows that only dark and white individuals survived.

4 0
3 years ago
Other questions:
  • What internal regulators do
    5·1 answer
  • 4. Which types of foods contain which types of macromolecules? Is one type of macromolecule healthier to eat than another? Why d
    8·1 answer
  • The variations that exist in a population of wild giraffes are usually a result of events that occur during
    10·1 answer
  • Is nucleotide a carbohydrate lipid protein or nucleic acid
    7·1 answer
  • 10. Which type of plant tissue is an active site of cell division?
    14·1 answer
  • Which of the following observations best demonstrates waters special property of cohesion
    8·1 answer
  • Introduced species often thrive and multiply in an environment very different from their original one. Why are they often able t
    15·1 answer
  • PLEASE HELP!!Why might humans not have widespread regeneration abilities?
    6·1 answer
  • The questions are choices, i have only 20 miniutes to answer
    13·1 answer
  • ayudaaaa porfa. Química, escribir formula molecular cantidad de enlaces por enlaces zigma hibridacion de las siguientes estructu
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!