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
Svetllana [295]
2 years ago
6

Ở đậu Hà Lan, gen A quy định thân cao trội hoàn toàn so với alen a quy định thân thấp. Cho cây thân cao giao phấn với cây thân c

ao, thu được F1 gồm 900 cây thân cao và 299 cây thân thấp. Tính theo lí thuyết, tỉ lệ cây F1 tự thụ phấn cho F2 gồm toàn cây cao so với tổng số cây cao ở F1 là bao nhiêu?
Biology
1 answer:
Bad White [126]2 years ago
6 0

Answer:

Ở đậu Hà Lan, A- thân cao, a-thân thấp. Cây thân cao giao phấn với cây thân cao — F1 có tỷ lệ 900 thân ca0:299 thân thấp — tỷ lệ 3:1 — cây thân cao có kiểu gen dị hợp Aa. Tỷ lệ F1 tự thụ phấn cho cho F2 toàn cây thân cao → F1 đồng hợp AA → chiếm 1 phần 4

P: Aa x Aa → 1 phần 4 AA: 2 phần 4 Aa: 1 phần 4 aa

You might be interested in
Please helpp in timed test! giving brainliest!!!! 15pts
9966 [12]

Answer:

The answer is True

Explanation:

Hope this helps:>

7 0
3 years ago
The division of the skeletal system that contains bones along the central line of the body is called what
larisa86 [58]
The skeletal system of a human body gives form, shape, and structure of the body. These includes all the bones and all the joints with each bone being a complex organ itself. 

The skeletal system has two divisions: (1) axial and (2) appendicular. All the vertical 80 axial bones comprised the vertical axis of the body while the 128 including free appendages consist the second division.

The answer to the question above based on the description given is AXIAL. 
3 0
3 years ago
List the two elements of Darwin’s theory of evolution. What are some objections to these concepts?
Fynjy0 [20]
The two main points from Darwin's theory of evolution is that 1) most, if not all living organisms evolved from  one or just a few common ancestors and that subsequent specialization of further generations then led to new species. Furthermore, he said that 2) the process how this was done was by natural selection where the organisms which were most adapted to their environment were successfully 'remembered in the gene pool'. 
7 0
3 years ago
What happen to the brain and the brain cavity?
Gnoma [55]

Answer: OK so The ventricles of the brain are a communicating network of cavities filled with cerebrospinal fluid (CSF) and located within the brain parenchyma. The ventricular system is composed of 2 lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle (see the images below).Survival in untreated hydrocephalus is poor. Approximately, 50% of the affected patients die before three years of age and approximately 80% die before reaching adulthood. Treatment markedly improves the outcome for hydrocephalus not associated with tumors, with 89% and 95% survival in two case studies

<h2>hope this helps have a awesome night/day❤️✨</h2>

Explanation:

8 0
3 years ago
This orgennelle is where proteins are made
valkas [14]
Ribosomes are the organelles of the cell which are involved in protein-synthesis (I. e. process of making proteins)
4 0
3 years ago
Other questions:
  • 1. What is the difference between biotic and abiotic? __________________________________________________________________
    5·1 answer
  • Which of the following has the greatest first ionization energy: Li,Be,B, or C?
    13·2 answers
  • Describe how the two nucleotide chains in DNA are bonded together.
    15·1 answer
  • Which of the following organisms groups was originally considered an animal by zoologists
    13·1 answer
  • Which of the following are likely impacts of
    11·1 answer
  • Why are cnidaria so significant to the animal kingdom?
    8·1 answer
  • What does gymnosperm mean in latin
    13·2 answers
  • Which of the following correctly pairs labels of animals with the way they feed?
    6·2 answers
  • Which substance is more acidic than orange juice?
    12·2 answers
  • Please Help Me ! I don’t Know
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!