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
Murljashka [212]
3 years ago
15

When explaining dominant and recessive traits to a younger family member, they respond, "Well chances are I can probably taste P

TC, since dominant traits are more common." How might you address this misconception?
Biology
2 answers:
8_murik_8 [283]3 years ago
7 0

Dominant traits for PTC aren't more or less common than recessive traits, because neither trait actually increases the chances of a person to survive and reproduce more. This means that the frequency of both traits in the population is roughly 50%. It also largely depends on your genes. If both your biological parents were homozygous dominant for the trait, then you 100% will be able to taste PTC, because you are also homozygous dominant for the trait. If both your parents were homozygous recessive for the trait, then you 100% won't be able to taste PTC, because you are also homozygous recessive for the trait. If only one of your parents was heterozygous, and the other parent was homozygous dominant for that trait, then you may have the recessive allele, but it won't be expressed because it will always be paired with the dominant allele. If only one of your parents was heterozygous and the other parent was homozygous recessive for the trait, then you will have the recessive allele, and there is a 50% chance that the recessive allele, or dominant allele is expressed. If both your parents were heterozygous, then you have a 75% chance of expressing the dominant allele, and a 25% chance of expressing the recessive allele. It largely depends on what your parents have, because the ability to taste PTC isn't something that has the potential to influence your likelihood to reproduce or live longer.

(Dominant allele - Taste PTC)

(Recessive allele - No taste)

andreyandreev [35.5K]3 years ago
3 0

Answer:

Dominance of an allele does not make it more frequent in the population.

Explanation:

Dominance is the ability of an allele to mask the effect of another allele of the same gene in heterozygous genotype. The heterozygous genotype would have the phenotype regulated by dominant allele only.  

However, dominance does not increase the frequency of an allele and its respective trait in the population. Frequency of an allele depends on the number of individuals having those alleles.

You might be interested in
What will be the effect of placing a plant cell in a hypotonic solution? A) The plant will wilt. B) The cell will shrink in size
MrMuchimi
 D) The cell will expand and become turgid.

The plant cell will basically absorb all the water by osmosis and swell, but because it has a cell wall it will become turgid.
6 0
3 years ago
Read 2 more answers
A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls loo
irakobra [83]

Answer:

5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)

6.) Frequency of R: 0.5

7.)Frequency of R: 0.5

8.)Frequency of R: 0.375

Explanation:

5.) If R and B code for the different forms of the same protein then they are only a few possible out comes

6.) First calculate the total alleles in population

allele R= 40

Allele B=40

total allele = R+B= 40+40

=80

Now to find allele R frequency is:

(Total R alleles) / (Total allele in pop)

40/80=

0.5

7.)Calculate the total alleles

Alleles from for R

RR= 10

R=10x 2= 20

Multiply the value by 2 because there are 2 R alleles present in

RB=20

R=20

Number doesn't change there is only 1 R allele

Total R=20+20

=40

Alleles For B

BB=10

B=10×2

=20

Same thing here, two B alleles together so multiple by 2

RB=20

B=20

Total B= 20+20

=40

Total alleles in pop add

40+40

=80

Frequency of R

Total of R/Total Alleles

=40/80

=0.5

8.)Repeat the same thing in 7 but use different numbers

RR=10

R=10x2

=20

RB=10

R=10

Total R= 20+10

=30

5 0
3 years ago
After arousal by a sensory stimulus, consciousness can be maintained by positive feedback, because of activity in the
KIM [24]

Answer:

This question lacks options, options are:

A) cerebral cortex.

B) basal nuclei.

C) sensory pathways.

D) motor pathways.

E) All of the answers are correct.

The correct answer is E.

Explanation:

The cerebral cortex processes and filters its information before passing the most relevant aspects to other regions of the brain. Some of these brain regions, in turn, send information back to the cortex. These loops, known as 'feedback systems', are considered essential for the functioning of cortical networks and their adaptation to new sensory information. Neural circuits must first assess the importance of incoming sensory information and then refine how it is processed in the future. Positive feedback, triggered with the purpose of amplifying the response to the initial stimulus, can be compared to a chain reaction or a vicious circle. Few are the functions regulated by this mechanism; rather it is triggered in pathological situations. It is the system by means of which the organism very rarely regulates any of the bodily functions under normal conditions, making the initial stimulus to be maintained and even increased. This type of mechanism is predominantly present in pathological situations: Its constitutive elements are: stimulus, receptor, afferent pathway, integrating center, efferent pathway, effector and response. The response does not have the ability to satisfy the initial stimulus.

6 0
3 years ago
1. A group of scientists proposes an idea that a chemical compound will enable bean plants to grow faster. They grow one group o
Paladinen [302]
C. data analysis.

I just took a test with this exact question and c was the correct answer
5 0
3 years ago
Read 2 more answers
Where does transport in plants occur?
Dafna1 [17]

Answer:

Xylem and Phloem tissues are present throughout the plant. They begin at the root and then move up to the stem, branches, and leaves. The xylem tissue transports water and minerals from the roots to the leaves whereas the phloem tissue transports food from the leaves to the other parts of the plant

Explanation:

5 0
3 years ago
Other questions:
  • Which option identifies one section of the ocean floor?
    13·2 answers
  • Where are proteins manufactured in cells?​
    7·1 answer
  • Most sex-linked, recessive traits-including hemophilia and color blindness-appear in males. This phenomenon is BEST explained by
    7·1 answer
  • Over the past century, several scientists around the world have made the following observations:
    9·1 answer
  • What does analyzing data and graphs or charts allow you to do
    7·2 answers
  • What is the difference between the Domains Eukarya and Bacteria
    10·1 answer
  • How can you tell a vein from other structures in the leaf?
    5·1 answer
  • The frequencies of the phenotypes in a population often change after each
    12·1 answer
  • Identify the wave that has the highest amount of energy​
    10·1 answer
  • 10. What causes root pressure, and what is the function of root pressure for the plant?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!