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
Leokris [45]
3 years ago
13

2. Describe the problem that McClintock suggested Harriet Creighton solve.

Biology
1 answer:
harina [27]3 years ago
7 0

Answer:

'Cross experiments done by Morgan, illustrating the X-inheritance link of a mutation Thomas Hunt Morgan moved intensely in a program of breeding and crossing miles of fruit flies at New York University in a room that was renamed the Fourth of the Flies. He tried to mutate the flies with various means (X-rays, centrifuges, etc.) .The fruit fly which has 4 pairs of chromosomes. One of those pairs was identified as containing X and Y sex chromosomes. He applied Mendelian principles in flies. Morgan's inheritance study demonstrated inheritance linked to sex, and is one of the first evidences that confirm the chromosomal theory of cross-based inheritance. In 1909, Morgan detected a fruit fly (Drosophila melanogaster) with a strange mutation which he called "white eyes", due to the coloration of his eyes (contrary to normal, which is red). Analyzing this fly under the microscope Morgan discovered that it was a male, and could use it as a stallion so that he could observe how the new characteristic of white eyes would pass from generation to generation.All the offspring of this cross will have red eyes, which He made Morgan suspect that something strange had happened, since the color of the father's eyes could not have disappeared. He decided to take a couple of "daughters flies" and cross them together, just to see what happened. Morgan's surprise was very great, observing that among the "granddaughters" flies only males had white eyes. The problem then was to explain what had happened during the hereditary transmission for the color of the white eyes only the males possessed. .

You might be interested in
Write the balanced equation for the reaction between potassium nitrate and sodium below.
Stolb23 [73]
KCl + AgNO
3

→

KNO
3
+
AgCl

Explanation:
Formulas for the compounds:
KCl
:
potassium chloride (reactant)
AgNO
3
:
silver nitrate (reactant)
KNO
3
:
potassium nitrate (product)
AgCl
:
silver chloride (product)
KCl + AgNO
3

→

KNO
3
+
AgCl

If the compounds are in aqueous solution, then their physical states could be added.
KCl(aq) + AgNO
3
(
aq
)

→

KNO
3
(
aq
)
+
AgCl(s)

3 0
3 years ago
Animal cells in different tissue vary in:
kakasveta [241]

Answer:

I THINK ITS SKIN N SHAPE

3 0
3 years ago
Fossils can be used to determine what the environment (or climate) was in ancient times.
CaHeK987 [17]
True because some fossils only lived in certain places
5 0
3 years ago
Read 2 more answers
Which of the following does not make up the structure of an ATP molecule?
Leno4ka [110]
1. ribosome
2. false
3. true
4. 3
5. all eukaryotes
6. true
7. mitochondria
5 0
3 years ago
Define mass and explain how it affects an object's density.
Klio2033 [76]

Great Question! Mass is basically how heavy Something is. Most people confuse mass with weight but there very different from each other. Weight is the downward force something has because of gravity. Mass can be measured in a variety of units too. The second part of the question is how it affects density. It affects it because to find the density you need to be able to find the mass since the formula is Mass divided by volume. I hope this helped you understand a little bit more about mass. Have a great day!

4 0
3 years ago
Other questions:
  • A _____ is an area of land that drains to a common body of water.
    15·2 answers
  • P waves and S waves are alike in that they ___
    14·1 answer
  • What determines the inherited traits an organism has?
    9·2 answers
  • Difference between osmosis, diffusion and plasmolysis
    5·1 answer
  • What would happen to a living organism if it were exposed to chemical capable of breaking down phospholipid bilayers
    12·1 answer
  • As skin cells move toward the surface of the body, they produce a protein that reduces water loss. This process is called
    11·1 answer
  • The volume of Uranius is less than 1/10 of the volume of Saturn
    11·1 answer
  • A couple has three children, two without sickle cell anemia and one with sickle cell anemia. The mother has sickle cell anemia a
    9·1 answer
  • Which of the following accurately describes where glyphosate can be used and why
    11·1 answer
  • How many heart does a human have?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!