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
inysia [295]
3 years ago
7

If alleles of two different genes assort independently during gamete formation then what should be the phenotypic ratio in the F

2 generation according to Mendelian genetics?
Biology
1 answer:
Pepsi [2]3 years ago
6 0

Answer:

9:3:3:1

Explanation:

If alleles of two genes separate randomly during anaphase-I of meiosis, some new combinations of the alleles are formed in the gametes. A heterozygous genotype for two loci (let's support TtRr) produces a total of four types of gametes in 1:1:1:1 ratio (TR, Tr, tR, and tr). The random fusion of these gametes from two double heterozygous parents (TtRr x TtRr) gives a phenotype ratio of 9:3:3:1. Here, 9/16 F2 progeny exhibit dominant phenotype for both loci while 1/16 exhibits recessive phenotype for both the genes. Rest 3/16 and 3/16 F2 progeny express dominant trait for one gene and recessive for the other.

You might be interested in
Why don't people's cells starve from lack of glucose while they are fasting​
GenaCL600 [577]
Answer:


Fasting can definitely raise blood glucose. This is due to the effect of insulin falling and the rising counter-regulatory hormones including increased sympathetic tone, noradrenaline, cortisol and growth hormone, in addition to glucagon. These all have the effect of pushing glucose from liver storage into the blood. This is normal. If you are not eating, you want to use some stored glucose. The question is this – if you are not eating, and your blood glucose went up, where did that glucose come from? It can only have come from your own body (liver). So, it’s a natural phenomenon, and the fasting now allows your body to use some of the glucose for energy.


6 0
2 years ago
The organelle that stores water in a cell and is much larger in plant cells is the...
Marina CMI [18]
This organelle is the Vacuole. 
6 0
2 years ago
Read 2 more answers
O recall how gas exchange occurs in<br>some water organisms,​
Lubov Fominskaja [6]
In aquatic plants, water passes among the tissues and provides the medium for gas exchange. In terrestrial plants, air enters the tissues, and the gases diffuse into the moisture bathing the internal cells.

Hope this helps
3 0
3 years ago
A group of scientists are cooperating on a study. Marine chemists, marine biologists, marine geologists, and physical oceanograp
Citrus2011 [14]
The discipline which would be responsible for collecting data about currents and tides is oceanography. It is a study of all the changes and aspects of the ocean. It analyses, collects and monitors information that refers to the dynamic of all the natural processes that take place in the ocean, including ocean currents, waves, and geophysical processes.
3 0
2 years ago
When DNA replication occurs before meiosis, the original DNA strand CAG CCG TAGis copied into complementary strand GTC ACA GGC A
Genrish500 [490]
D is the answer! I just had this question and it was right !

5 0
3 years ago
Read 2 more answers
Other questions:
  • I need help with 2-5
    7·1 answer
  • A scientist conducts an experiment to test a hypothesis. The experiment confirms that the hypothesis could be true. When will th
    12·2 answers
  • City officials are proposing a recycling program. They must examine the benefits to their community, not just the environment, t
    12·2 answers
  • What is the MAIN cause of increased erosion, especially for soil?
    13·2 answers
  • What cell structure controls the flow of the water and sucrose into and out of the cell?
    9·1 answer
  • A pack of dog is considered which level of bioligical organization
    6·1 answer
  • Which of the following are potential musculoskeletal side effects of some prescription medications?
    8·2 answers
  • A well tested concept that explains a wide range of observations. True or False
    14·1 answer
  • Among us code:<br> SRCSMF
    11·2 answers
  • A child holds a red ball. Why does the ball look red?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!