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
Elis [28]
3 years ago
13

Hair pigmentation in mammals follows the generic enzymatic pathway depicted below. Enzyme A synthesizes a black pigment from a p

recursor, and the contribution of enzyme B results in the final agouti pigment:
Precursor molecule (colorless) Black pigment Agouti pigment

Each enzyme is coded by a single allele with complete dominance. If a crossing design begins with true breeding parents for coat color with the genotypes AAbb and aaBB. What will be the expected F2 genotypic and phenotypic ratios of the eventual F2 progeny?
Biology
1 answer:
jenyasd209 [6]3 years ago
4 0

Answer:

Given,

Colourless molecule is converted to black pigment by enzyme A. Black pigment is converted to agouti pigment by enzyme B.

Parent 1: AAbb = Black

Parent 2: aaBB = Colourless

AAbb X aaBB = AaBb (F1) The entire progeny is agouti coloured since dominant alleles for both the genes are present.

When AaBb X AaBb according to dihybrid cross in F2 :

A_B_  = 9 ( Agouti )

A_bb  = 3  ( Black )

aaB_  = 3  ( Colourless )

aabb   = 1 ( Colourless )

Hence genotypic ratio is 9 : 3 : 3 : 1

and phenotypic ratio is 9 (agouti) : 3 (black) : 4 (colourless)

You might be interested in
What is the genotype of a male with red-green color blindness?
balandron [24]

Answer:

The genotype of male with red-green color blindness is XY, X chromosome possessing recessive allele of gene responsible for differentiating red-green color.

Explanation:

Color blindness is sex-linked trait and its inheritance follows criss-cross pattern. Dominant gene of allelomorpihc pair enables a person to differentiate between red and green color.

The genotype of male and female are different for the pair of sex chromosomes. Male is hetero-zygous (XY) and female is homo-zygous (XX). The gene controlling this trait is present on X chromosome.

Hope this helps (:

8 0
3 years ago
Which element is a metaloid
Studentka2010 [4]

Answer:

Elements that are the border line of metals and non-metals.some elements near the stepped line have mixed properties of metals and non-metals these elements are called metalloid e.g. Silicon and Germanium

Explanation:

I hope this will help you:)

3 0
3 years ago
neogi ds, trikha v, mishra kk, bandekar sm, yadav cs. comparative study of single lateral locked plating versus double plating i
Ann [662]

Plating is a producing procedure wherein a skinny layer of steel coats a substrate. this may be achieved via electroplating, which calls for an electric current, or via electroless plating, which is in the autocatalytic chemical method.

The two techniques have different effects. Coating involves the usage of paint, like a powder-lined end. The process of plating, mainly “electroplating,” includes passing cutting-edge through an electrolyte. It splits and deposits atoms on metallic objects, making them electroplated.

Like plating, the coating is applied to metallic surfaces for protective functions. however, unlike electroplated surfaces, powder-lined surfaces are basically blanketed in paint – not steel.

The plating procedure is a submit-manufacturing system. It involves the coating or overlaying of the surface of a workpiece with a skinny layer of metallic. The simple know-how of Plating to have a thin layer of one steel coating a substrate. therefore, the aim is to enhance the general quality of the product.

Learn more about Plating here:

brainly.com/question/24813726

#SPJ4

6 0
1 year ago
What best explains why angiosperms are the most diverse and successful plant group today
Pachacha [2.7K]
Because they have flowers which attract pollinators
6 0
2 years ago
Read 2 more answers
What property of a virus makes it useful for making transgenic organisms?
morpeh [17]

Viruses reproduce by incorporating their DNA into an organism's genome to tap into the host replication mechanism to reproduce themselves. Viruses, therefore, cannot copy outside their host. This property of viruses makes them suitable for the production of transgenic organisms. This is achieved by replacing the DNA piece that causes virulence in the virus with the desired gene that is to be transduced into the host organisms.     





4 0
3 years ago
Other questions:
  • Which of the following is a nucleotide found in DNA?
    9·1 answer
  • Asteroids are also known as
    12·2 answers
  • Indiana is home to fossilized crinoids. These small, sea-dwelling invertebrates are vaguely reminiscent of starfish, and some sp
    12·2 answers
  • How is a forest ecosystem more stable than a cornfield?
    5·1 answer
  • Compare and contrast freezing rain, sleet, and hail
    5·1 answer
  • The Sun is the primary source of energy for ecosystems. The Sun emits______ . When an organism obtains nutrients by feeding on o
    10·2 answers
  • Which organs are part of the excretory
    14·1 answer
  • The water in the Buffalo River flows at an average speed of 5 km/hr. If you and a friend decide to canoe down the river at a dis
    13·1 answer
  • What is most likely to occur when a mass of cold air moves into a region occupied by warmer air
    9·1 answer
  • Please answer!! i need help so bad. please!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!