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
kirill115 [55]
3 years ago
9

A geneticist is studying two traits in the fruit fly - eye color and wing shape. They perform a dihybrid cross. If the genes for

these traits are not linked, what proportion of the F2 offspring will be expected to display the dominant phenotype for eye color and recessive phenotype for wing shape
Biology
1 answer:
Len [333]3 years ago
3 0

Answer:

3/16

Explanation:

<u>According to Mendel's law of independent assortment of genes, when a dihybrid cross involves two genes that assort independently and one of the parents is dominant for the two genes and the other is recessive, the phenotypic ratio of the offspring at F2 would be 9:3:3:1</u>. The proportion of the offspring with the dominant parental traits would be 9/16, those with the recessive parental traits would be 1/16, while those with mixed traits would be 3/16 each.

Assuming the eye color is represented by E and the wing shape is represented by W. At F2

     EeWw    x    EeWw

E_W_ - 9/16 (dominant for both eye color and wing shape)

E_ww - 3/16 (dominant for eye color and recessive for wing shape)

eeW_ - 3/16 (recessive for eye color and dominant for wing shape)

eeww - 1/16 (recessive for both eye color and wing shape)

<em>Hence, the proportion of the offspring with dominant phenotype for eye color and recessive phenotype for wing shape would be </em><em>3/16.</em>

You might be interested in
What are stem cells? Where are they found?
Debora [2.8K]
Following the treatment, the Fetal Stem Cells will travel throughout the body, detecting damaged cells and tissue and attempts to restore them. The Fetal Stem Cells can also stimulate existing normal cells and tissues to operate at a higher level of function, boosting the body’s own repair mechanisms to aid in the healing process. These highly adaptive cells then remain in the body, continually locating and repairing any damage they encounter.
4 0
3 years ago
Describe three physical characteristics of monerans?
PtichkaEL [24]
No Nucleus

All members of the kingdom Monera have no nuclei in their cells. All genetic material in moneran cells floats loose in the cytoplasm. In fact, the only parts of the cell that exist in a moneran are the cell wall and the ribosomes. Moneran cell walls are made of peptidoglycan. This is the case for all monerans except for archaebacteria. Monerans also move about using flagella.

Digestion

Monerans digest their food outside of the cell and then absorb the nutrients. Different monerans, however, digest their food in a variety of ways. Some simply generate their own food by making their organic compounds. Others need to feed off of other organic matter, such as decaying material. Some monerans are parasites that feed off of a host and others create a symbiotic relationship with another organism. According to Thinkquest.com, monerans are separated into different classifications by how they feed.

Other Characteristics

Monerans reproduce by both sexual conjugation or asexual binary fission. Circulation is done by diffusion, which is similar to the way they digest. Monerans all breathe differently. Some cannot survive without oxygen while some die if exposed to oxygen. Monerans come in three different shapes: spiral, rod-shaped or spherical. In order to protect themselves, most Monerans are surrounded by a capsule of polysaccharides that keeps them from drying out and acts as protection against other harmful cells.

7 0
3 years ago
All living organisms on earth grow, maintain homeostasis, and undergo cell division. Two types of cell division are binary fissi
WINSTONCH [101]

the correct answer is b. i hope this helps you

7 0
3 years ago
Read 2 more answers
Explain how the substitution affect in the income effect interact with changes in price to change the quantity demanded
kolbaska11 [484]

Answer:

For normal goods, the income effect and the substitution effect both work in the same direction; a decrease in the relative price of the good will increase quantity demanded both because the good is now cheaper than substitute goods, and because the lower price means that consumers have a greater total purchasing power.

Explanation:

6 0
2 years ago
What is the primary function of the phospholipid in the cell membrane
DaniilM [7]

Answer:

The primary function of the plasma membrane is to protect the cell from its surroundings

5 0
3 years ago
Other questions:
  • Why Haven’t More Transitional Fossils Been Found ? Choose ALL That Apply
    14·2 answers
  • Volcanic islands such as the hawaiian islands form as a result of ________.
    13·1 answer
  • ________________ and water, in the presence of light energy, are the reactants in photosynthesis. A) Oxygen B) Carbon Dioxide C)
    6·2 answers
  • Rory has been diagnosed with ADHD. He is often impulsive and is prone to emotional outbursts. He has difficulty making plans and
    12·1 answer
  • Why are coal, natural gas, and oil non renewable resources ?
    10·1 answer
  • What does DNA stand for
    15·2 answers
  • A frog has a genetic mutation in its skin cells that causes part of its skin to turn orange. The frog will not pass this genetic
    7·2 answers
  • Which of the following is a property of water? (4 points)
    10·1 answer
  • Approximately 20% of the world’s adult population are able to digest milk sugar (lactose).They are “lactose tolerant.” This trai
    9·1 answer
  • The energy that fuels winter storms comes from
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!