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
gtnhenbr [62]
3 years ago
8

8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.

Biology
1 answer:
devlian [24]3 years ago
3 0

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

<u>Bb X Bb cross </u>

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

<u>Genotypes</u>:  

  • Bb, 50%
  • BB, 25%
  • bb, 25%

<u>Phenotypes</u>:

  • Brown feathers, 75%
  • Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

You might be interested in
Where on a continent would you expect to find volcanoes ?
Gnesinka [82]

Answer:

Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.” The greatest concentration of volcanoes has been found in Antarctica

Explanation:

hopes this helps

5 0
3 years ago
Read 2 more answers
During which step of the water cycle does water combine with pollutants on Earth's surface?
Troyanec [42]

The correct answer is option C, that is a runoff.  

The water from rain, snowmelt, or other sources is known as surface runoff, it flows over the land surface, and is a prime constituent of the water cycle. Runoff, which takes place on the surfaces prior to reaching a channel is also known as overland flow. When flowing of runoff takes place along the ground, it can pick up soil contaminants like pesticides, petroleum, or fertilizers, which turn into overland or discharged flow.  


5 0
2 years ago
3. Summarize the physical differences between the jaws of the gorilla, Australopithecus, and modern human.
Anika [276]

Answer:

A gorilla's jaw is different from a human's jaw due to the way that their jaws open for example a gorilla's jaw will open from the top of their head to even their bottom such as their jaw while a human jaw will open from the bottom.

Explanation:

3 0
1 year ago
According to Charles Darwin what is one reason that not all organisms survive in nature?
Inessa05 [86]
According to Charles Darwin what is one reason that not all organisms survive in nature? 
<span>B. There are more organisms born than resources can support.</span>
3 0
3 years ago
What are the function of roots? ​
Andrew [12]

Answer:

Root, in botany, that part of a vascular plant normally underground. Its primary functions are anchorage of the plant, absorption of water and dissolved minerals and conduction of these to the stem, and storage of reserve foods. The root differs from the stem mainly by lacking leaf scars and buds, having a root cap, and having branches that originate from internal tissue rather than from buds.

5 0
3 years ago
Other questions:
  • Which process could cause ice to form a thin layer over a lake
    7·2 answers
  • Why is DNA evidence so reliable in determining identity
    12·1 answer
  • Which set of properties distinguishes potential energy from kinetic energy?
    10·2 answers
  • Suppose you are an astronomer, and a child asks you to explain how long it takes light to travel through space. In your own word
    15·1 answer
  • in sickle-cell disease variation is one gene cause red blood cells to bend or sickle this means the sickle cells
    10·1 answer
  • Radiation requires a heated liquid to transfer energy.
    12·1 answer
  • What would be the best microscope to view living single-celled organisms in a sample of pond water
    12·1 answer
  • Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identif
    9·1 answer
  • A phase change diagram for water is shown below. The star on the diagram represents the temperature and pressure of some water v
    15·2 answers
  • Human blood type is an example of what where both the A and B blood types can be expressed semiagenously
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!