Embryology Questions
Asked by Users

How does differentiation produce tissues that have specialised structure and organelles? 
Read Embryonic Development .

Different embryonic layers of tissue form during the process of _____. 
quick help for biology please, its part of my review. Choices are 1.fertilization 2.birth 3.cleavage 4.gastrulation Study Embryonic Development . …

How many tissue/germ layers are found in the embryo of a mammal? 
Read Embryonic Development .

During embryonic development of animals, tissue layers form. This process of embryonic tissue development is called _____. 
Click on post comments to answer.

Why are not found extraembryonic membrane in invertebrate? 
extra embryonic membrane types

How does the human embryo develop? 
The human embryo develops the same extra embryonic membranes as birds and reptiles. However,these membranes play in different parts in the development …

What is notochord? Give its importance. 
GIVE ITS IMPORTANCE

Does the placenta allow transport of blood? 
I think no.

Why it is an advantage for maternal blood to be in a cavity rather than in a vessel? 
mammalian placenta and umblical cord

Which part of adult chordates is formed by the vegetal pore? 
1) Anterior side 2) Posterior side 3) Dorsal side 4) Ventral side

Which is the innermost extraembryonic membrane? 
Which is the innermost extra embryonic membrane?

What are four organs or structures formed from the ectoderm? 
Biology question.

What is biological development? 
a) regulated through differential gene expression b) the shaping of the whole organism c) the process by which single-celled zygote gives rise to cells …

What is the process of differentiation that forms the tissue types? 
I dont know the answer can you help me as soon as possible, I need it by 1 day of this submission thank you very much. Thanks, great website by the …

What are the difference or similarities between birds and mammals as to the organization of blastomeres, formation of blatocyst cavity and source of embryonic layers? 
Mammals form blastocyst but not birds. Click on post comments to answer.

Compared to the number of types of cells in the three embyonic layers, the number of types of cells in the differentiating embryo is? 
The same? Greater? Or less? Click on post comments to answer.

What percentage of female embryos will die from newly discovered diseases? 
A newly discover disease is caused by an extremely rare allele of a gene on the x chromosomes. The disease is 100% lethal.A female carrier of the allele …

A relationship between the developing embryo and mother in which the eggs are fertilized internally and then deposited outside the mother's body to complete their development is called? 
A. oviparity B. ovoviviparity C. viviparity D. external fertilization Click on post comments to answer.

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why? 
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If allantios is not involved in placenta what is that placenta called? 
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Will cardiogenic mesoderm form in the absence of endoderm? 
I believe it doesn't due to the fact the endoderm has the BMPs which are there, but I am not 100%.

Sam looked at an image of an embryo that is a compact mass of cells. Which is the term for this embryo? 
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In most vertebrates the notochord disappears as what develops in embryos? 
Ventral nerve chord. Click on post comments to answer.

What is the meaning of neurula? 
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What is schizocoel? 
?

How does a single zygote cell with the same type of genetic material develop into specialized tissues? 
The mystery/ miracle of life... Note: Totally agree.

What is gastrulation? 
I don't know.