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
VMariaS [17]
3 years ago
13

Skin color in a certain species of fish is inherited via a gene with four different alleles. Each allele confers a unit of color

darkness such that having allele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units. A fish of this type has the genotype S1, S3, and its mate has the genotype S2S4. What proportion of their offspring would be expected to have five units of color
Biology
1 answer:
jeka57 [31]3 years ago
5 0

Answer:

25% of the progeny with genotype S3S4 is expected to express 5 units of color

Explanation:

<u>Available data</u>:

  • Skin color in a certain species of fish is inherited via a gene with four different alleles
  • allele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units.

Cross:

Parentals) S1 S3   x   S2S4

Gametes) S1   S3      S2     S4

Punnett square)       S1           S3

                      S2     S1S2      S2S3

                      S4     S1S4      S3S4

F1) 1/4 = 25% of the progeny is expected to be S1S2, expressing 3 units of color ⇒ allele S1 provides one unit, allele S2 provides two units of color

    1/4 = 25% of the progeny is expected to be S2S3, expressing 5 units of color ⇒ allele S2 provides two units, allele S3 provides three units of color

    1/4 = 25% of the progeny is expected to be S1S4, expressing 5 units of color ⇒ allele S1 provides one unit, allele S4 provides four units of color

    1/4 = 25% of the progeny is expected to be S3S4, expressing 7 units of color ⇒ allele S3 provides three units, allele S4 provides four units of color

25% of the progeny with genotype S3S4 is expected to express 5 units of color

You might be interested in
What are some of the biological features that humans have developed that the early mammals did not possess? How have these featu
horsena [70]
An example are our arms are similar to other s
4 0
2 years ago
What process is similar in both fermentation and cellular respiration
gladu [14]

glycolysis in the cytoplasm is similar in both fermentation and cellular respiration.

- hope this helps

8 0
3 years ago
Read 2 more answers
Why is it important to narrow the formality gap for effective validation of interactive properties of systems?
NeX [460]
Area specialists approving the framework may not comprehend plan notations.Real-world prerequisites are more vital than outline notations.It is difficult to believe in subjective proofs.So that psychological researchers can comprehend the custom hole.
4 0
3 years ago
When scientists are doing research to determine how the environment affects a life form, it often takes many years to reach a co
ki77a [65]
When using the term 'life form' I assume you are speaking of animals, bacteria, etc. Scientists take years to find their desired conclusion because of how the environment tends to change quite frequently (Depending on where the creature lives). The earth is constantly revolving and rotating, which causes changes in the environment. These changes affect the animals behavior, eating habits, and overall chances of survival. A factor that must also be considered is that scientists have to examine these creatures in their natural habitat which can be an issue depending on where they live. For example, if I were to study the behavioral patterns of a Leopard, it would be extremely difficult to do so because the Leopards are specifically keen at camouflaging in their environment. That would make observing its behavioral patterns very frustrating and time consuming. In a way, mother nature is always against us.

(Hope this helps)
3 0
3 years ago
The difference between aerobic and anaerobic glucose breakdown is
REY [17]
<span>the end products of aerobic glucose breakdown are carbon dioxide and water; the end product of anaerobic glucose breakdown is lactic acid</span>
8 0
4 years ago
Other questions:
  • When you are breathing normally, exhalation results mainly from?
    12·1 answer
  • which of the following statements is not true about the Calvin cycle? A) the cycle is the second set of reactions in photosynthe
    10·2 answers
  • What part of the hemoglobin molecule actually binds the oxygen molecule? what part binds carbon dioxide?
    13·1 answer
  • -261.4°F<br>-164.3°C<br>what's the kelvin​
    15·1 answer
  • What problems do invasive species pose to an ecosystem?
    11·1 answer
  • The paired, rod-shaped ____ cartilages are located in the mucous membrane fold that connects the epiglottis to the arytenoid car
    14·1 answer
  • Response to sign stimuli, or releasers, is generally based upon which of the following?
    6·1 answer
  • Scientists recently published a paper about an endangered population of Scarlet Bass (species A) in Lake Erie. The authors also
    5·1 answer
  • Your body receives the same amount of energy from 1 gram of fat as it does from 1 gram of iron.
    13·1 answer
  • What is the term for the scientific study of the universe
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!