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
Artemon [7]
3 years ago
7

In cats, the Dense pigment gene, D/d, codes for melanophilin, a protein involved in the transportation and deposition of pigment

into a growing hair. A separate gene, M/m, is responsible for the production of the pigment, with M_ producing black pigment and mm producing brown. When a cat has two recessive d alleles, its fur is a light gray color regardless of which alleles of M/m are present.
Required:
State the phenotype and frequency for each of the following outcomes of a dihybrid cross:

a. M_D_
b. M__dd
c. mmD
d. mmdd
Biology
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

a. M_D_ : 9/16 Black furred individuals

b. M__dd : 3/16 gray furred individuals (1/16 MMdd + 2/16 Mmdd)

c. mmD_ : 3/16 Brow-furred individuals (1/16 mmDD + 2/16 mmDd)

d. mmdd: 1/16 gray furred individuals.

Explanation:

Available data:

  • Dense pigment gene, D, codes for melanophilin.
  • D allele dominant over d.
  • Gene M/m is responsible for the production of the pigment
  • M is dominant over m
  • If D is present, M/m is expressed
  • If dd is present, M/m is not expressed  
  • DDMM, DdMM, DDMm, DdMm --->Black fur
  • DDmm, Ddmm ---> Brown fur
  • ddMM, ddMm -----> Light gray fur

Cross: between two dihybrids

Parental)         DdMm     x     DdMm

Phenotype) Black-furred      Black-furred

Gametes) DM, Dm, dM, dm   DM, Dm, dM, dm

Punnet Square)    DM        Dm         dM          dm

             DM       DDMM    DDMm   DdMM   DdMm

             Dm       DDMm    DDmm   DdMm   Ddmm

             dM        DdMM    DdMm    ddMM   ddMm

             dm        DdMm    Ddmm    ddMm   ddmm

F1) 9/16 Black-furred individuals, D-M- (1/16 DDMM + 2/16 DDMm + 2/16    

                                                                 DdMM + 4/16 DdMm)

    3/16 Brown-furred individuals, D-mm ( 1/16 DDmm + 2/16 Ddmm)

    4/16 Gray-furred individuals, dd-- ( 1/16ddMM + 1/16 ddmm + 2/16 ddMm)

   

   

You might be interested in
Que tipo de relación existe cuando una especie que utiliza a otra como vivienda
Ierofanga [76]
Talk in English I don’t understand
4 0
3 years ago
Meiosis consists of _________ division(s) of the nucleus.
Mila [183]

Answer:

the answer is two for this question

7 0
3 years ago
Hey Professor researching see stars off the coast of France has been offered a position at a Mexican university should the resea
Wewaii [24]
No they are two different environments with different factors
4 0
3 years ago
Explain why the blood vessels and the heart are not made of the same type of muscle even though they are both involuntary.
Lubov Fominskaja [6]

Answer:Each muscle in the body is made up of cells called muscle fibers. Muscle fibers are long, thin cells that can do something that other cells cannot do—they are able to get shorter.

Explanation:

IM not sure if this would help but their you go.

3 0
3 years ago
Curvatures of the spine serve the body by ________.
Nataly_w [17]
Spine or Vertebral column is composed of a series of 31 bones known as vertebrae.Spine or Vertebral column is composed of a series of 31 bones known as vertebrae. Curvature of the spine serve the body by giving additional springiness and flexibility to the spine by absorbing the shock Curvature of the spine serve the body by giving additional springiness and flexibility to the spine by absorbing the shock.
5 0
3 years ago
Other questions:
  • 20. Geneticists creating the "glow in the dark" or fluorescent rabbit, inserted the GFP gene
    12·1 answer
  • Hominid that first made clothing and art and is still here today
    6·1 answer
  • Which is an example of why the process of photosynthesis is important to life on Earth?
    13·2 answers
  • What is the unverisal code of all living organisms in the dna
    5·1 answer
  • What problems could arise in the circulatory system from poor nutrition and lack of exercise?
    11·1 answer
  • Yellowfin tuna are large fish that are found in tropical and subtropical waters around the world. They typically school under ob
    15·2 answers
  • Pleasseee answer this
    6·1 answer
  • Brainliest to first responder. 10 points regardless. Which term describes the chromosomal abnormality of having extra chromosome
    14·1 answer
  • You decide to designate the twist allele as FT to distinguish it from the forked allele F. Using the following allele symbols, i
    5·1 answer
  • Rocks formed from the cooling lava of volcanic eruptions are _____.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!