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DENIUS [597]
3 years ago
10

Look at the punnett square, which shows the predicted offspring of the f2 generation from a cross between a plant with yellow-ro

und seeds (yyrr and a plant with green-wrinkled seeds (yyrr. select the correct statement about wrinkled yellow seeds in the f2 generation.
Biology
1 answer:
weeeeeb [17]3 years ago
5 0
It would be a 50/50 chance of getting a plant with yellow round seeds or a plant with green wrinkled seeds.
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Genetic variation ________. Genetic variation ________. is created by the direct action of natural selection tends to be reduced
taurus [48]

Answer: Natural selection can act on traits determined by alternative alleles of a single gene ... hope this helps, this is one of many answers for this question!

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3 years ago
Over time, organisms change. Sometimes they change so much that descendants may be completely different from their ancestors. Wh
poizon [28]
A) mutations in egg and/or sperm 
7 0
3 years ago
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The term "myoparesis" is used to describe: weakness or slight muscular paralysis increase in muscle movement protrusion of muscl
Veseljchak [2.6K]

The term myoparesis is used to describe the weakness or slight paralysis of the muscles. The myoparesis can begin in a person suddenly or it might progress with gradual weakness of the muscles. The affected individual may suffer from weakness of the muscles with incomplete paralysis along with experiencing pain and spasms in the affected muscles. The causes for the development of myoparesis includes stroke, cerebral palsy, multiple sclerosis, and spinal cord injury.

Hence, the answer is 'weakness or slight muscular paralysis'.

8 0
3 years ago
Define embryonic stem cells. Explain the pros and cons of Embryonic Stem Cells
just olya [345]

Answer:

Embryonic stem cells are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.

Explanation:

 

 Adult Stem Cells  

Embryonic Stem Cells      

Induced Pluripotent Stem Cells      

Pros

Trans differentiate and and reprogramming of these cells is possible but is not well studied

Thought to be less likely to be rejected if used in transplants

Success has already been demonstrated in various clinical applications  

Can maintain and grow for 1 year or more in culture

Established protocols for maintenance in culture

ESCs are pluripotent cells that can generate most cell types

By studying ESCs, more can be learned about the process of development

 

Abundant somatic cells of donor can be used

Issues of histocompatibility with donor/recipient transplants can be avoided

Very useful for drug development and developmental studies

Information learned from the “reprogramming” process may be transferable for in vivo therapies to reprogram damaged or diseased cells/tissues  

Cons

Limitations on ASC ability to differentiate are still uncertain; currently thought to be multi or unipotent.

Cannot be grown for long periods of time in culture

Usually a very small number in each tissue making them difficult to find and purify

Currently there is no technology available to generate large quantities of stem cells in culture

 

Process to generate ESC lines is inefficient

Unsure whether they would be rejected if used in transplants.

Therapies using ESC avenues are largely new and much more research and testing is needed

If used directly from the ESC undifferentiated culture prep for tissue transplants, they can cause tumors (teratomas) or cancer development    

Methods for ensured reproducibility and maintenance, as differentiated tissues are not certain.

Viruses are currently used to introduce embryonic genes and has been shown to cause cancers in mouse studies    

7 0
2 years ago
Which of the following molecules are involved in pattern formation during development?
Leno4ka [110]

Answer:

C) cytoplasmic determinants

Explanation:

Cytoplasmic determinants are special molecules which play a very important role during oocyte maturation, in the female's ovary.

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2 years ago
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