21) ZPA cells of the chick embryo produce which morphogen? A) : 1380973

21) ZPA cells of the chick embryo produce which morphogen?
A) : 1380973.



21) ZPA cells of the chick embryo produce which morphogen?

A) sonic hedgehog

B) sonic chicken

C) bicoid

D) chicken wing factor


22) How long is the DNA in the homeobox sequence?

A) 4 base pairs

B) 68 base pairs

C) 180 base pairs

D) 362 base pairs


23) What is the significance of the homeobox sequence studied in animal species?

A) Certain genetic instructions for development have changed very little over time.

B) Certain genetic instructions for development have changed a great deal over time.

C) Certain genetic instructions vary based on structural differences.

D) Certain genetic instructions vary based on phyla.


24) Predict what would happen if a fruit fly regulatory gene that codes for a leg replaced a frog gene in the same position.

A) The frog would produce a fruit fly leg.

B) The gene would kill the frog embryo.

C) The frog would produce a frog leg.

D) The frog would produce a leg that is part frog and part insect.


25) Two populations of cells may end up segregating themselves into different layers during development because they have different:


B) sizes.

C) apoptosis programming.

D) phospholipid molecules.

E) cell adhesion molecules.

26) What action by the individual cells involved can assist processes involving cell movement such as gastrulation?

A) transcription factors

B) microfilament growth

C) invagination

D) evagination

E) phagocytosis


27) Without programmed cell death, your ________ might look more like a ________.

A) hand; paddle

B) head; hand

C) leg; heart

D) foot; hoof


28) Development occurs:

A) throughout the life of the organism.

B) only in non-dividing cells.

C) only during growth of the organism.

D) only in animals.





21) ZPA cells of the chick embryo produce which morphogen?
A) : 1380973

Get a Quick Quote

Approximately 250 words
Total price (USD) $: 10.99

Let us do the hard and easy stuff in nursing for you

Find an experts in Nursing Papers and kickstart your grades today with NursingPapersLib.com

Best nursing assignment writers

It is easy to promise the availability of help with nursing assignments but without the best nursing assignment writers in the industry, such promises can turn out to be hot air. Our expert nursing writing services feature seasoned professionals who have been providing nursing writing help and consultation services for a long time. Irrespective of the year of study or practice students are involved in, the best nursing assignment writers know the nuances of nursing student’s needs. There is no better way to assure you of the best nursing writing services than providing nursing writing help from peers who are ahead of you and have only the best interests at heart. Only the best nursing assignment writers will handle your request for the best nursing writing service because your communication can get through to them. Knowing the potential nursing writing help that you seek from the way you frame your request is the hallmark of a writer who provides expert nursing writing services. This is because, with their knowledge, there is likely less room for misunderstood requests when you are seeking the best nursing writing service you need.

How it Works

Place an Order

Provide your contact information, select an order type, and describe your requirements. This isn’t going to take long!

Image showing step 1 of making an order
Image showing how to make payment for your order

Select an Appropriate Writer

We’ll match your specifications with our available authors after we have all of the relevant information concerning your order.

Image showing how to download your completed results

Enjoy the End Product

One of our specialists will fulfill your purchase according to your specifications so that you are happy with the end result.

Why Choose us?

Free Revisions

We understand that not always out tutors could catch all details required which arises a s a result of miscommunication or inadequate information provided. However, we are always eager to provide you with free revisions till we get it right with your Nursing Papers.

Quality Non-plagiarized Nursing Papers

Our Professional Team of Nursing Writers always adhere to quality standards and plagiarism policy. Furthermore, we employ Quality Control Tools to ensure you get Custom Written Nursing Paper. Every paper is reviewed by an independent editor for syntax errors before submission

Professional Nursing Writers

At NursingPapersLib.com, we specialize in Nursing Homework Help Services only. Thus, this allows us to cater to our nursing students and get high qualified nursing tutors who will deliver exceptional results in nursing papers

Flexible Pricing

We always endear to provide best prices that matches our quality and your budget. This is why we provide a pricing mechanism based off several factors such as length, level of education and type of assignment. our pricing are highly competitive across the industry standard prices.