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18 votes
Accepted

Are these spider eggs?

Yes, those are definitely eggs. And I believe that is a female grass spider (Genus: Agelenopsis). Eggs are typically laid in late summer or fall and spiderlings emerge the following spring....A ...
Dave Gruenewald's user avatar
8 votes
Accepted

Is the yolk of an egg a cell?

No, the yolk is not part of the egg cell in chicken and ostrich eggs. Although I found many websites claiming that the yolk is part of the egg cell, none of them were reputable. I think that it is ...
Zo-Bro-23's user avatar
  • 581
8 votes

What insect eggs are these?

These are caterpillar/butterfly eggs belonging to the Rounded Palm-Redeye (Erionota torus). Here is an example of the eggs of a leaf: The larvae / caterpillar form looks like this: And fully formed ...
JimN's user avatar
  • 2,049
7 votes
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What are these (eggs?) ? ( Location - India )

The group of insects called Neuropterans have several species that lay eggs on stalks. This group includes lacewings, owlflies and antlions, however stalked eggs are not a defining trait of the group. ...
hamilthj's user avatar
  • 921
7 votes
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Can someone identify these eggs?

That's an apple snail egg cluster. They're freshwater snails, and by placing their egg clutches above the water line they protect them from predation. We actually have an issue with apple snails in ...
CKM's user avatar
  • 8,119
5 votes
Accepted

What kind of hot pink eggs are these?

Those appear to be the eggs of a species of apple snail in the genus Pomacea, probably the introduced invasive golden apple snail (Pomacea canaliculata), but there are at least two other candidates1,2....
tyersome's user avatar
  • 5,598
5 votes

What kind of insect eggs are these (found in Malaysia)?

This eggs belong to Mictis profana which is a species of insect in the family Coreidae known by the common names crusader bug and holy cross bug. It is distributed in Australia, Indonesia, and the ...
Majd's user avatar
  • 51
4 votes
Accepted

Can a chicken really be hatched outside of the egg?

Yes it is real, in the sense that this protocol has been through a peer reviewed journal. Note that the embryo is developing outside the shell, not outside the egg. It is the fertilized egg that ...
WYSIWYG's user avatar
  • 35.6k
4 votes

Why are the shells of birds' eggs fragile but not those of other creatures?

Your question is, I think, based upon a false presumption: that avian eggs are more fragile than those of other oviparous animals. The paper Evolution of the Cleidoic Egg Among Reptilian Antecedents ...
JYelton's user avatar
  • 945
3 votes

Cause of premature death in turtle eggs

Well, a real chance this is a genetic problem. How to test. For the next hatching, have some “normal” unrelated eggs nearby under the exact same conditions. If they also have higher mortality then ...
Polypipe Wrangler's user avatar
3 votes
Accepted

Is it possible to be allergic to the yolk of an egg but not the egg white?

The protein composition of the egg white and egg yolk differ appreciably. Hence, it is plausible for one to countenance symptoms of indigestion when consuming the egg yolk as opposed to the albumen, ...
Epistemonaut's user avatar
3 votes
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Is it possible to grow a fertilized human egg entirely outside the woman's womb?

I believe what you're describing is referred to as ectogenesis which is essentially developing a fertilized egg inside an artificial womb until it’s able to survive outside the controlled environment. ...
M. Carter's user avatar
  • 205
3 votes

Can I breed the most productive hen by hatching eggs from the most productive ones?

In theory yes, so long as you maintain genetic variation within your flock of hens (e.g. by bringing in outsider males to prevent inherited diseases spreading), artificial selection will lead to a ...
Oliver Houston's user avatar
2 votes

Exact meaning of the term "clutch"

A clutch usually refers to all the eggs for a single reproductive event or laying or location. It can mean either all those laid by one organisms in one event or all those laid in a population in a ...
John's user avatar
  • 14.8k
2 votes
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From what kind of insect might these eggs be

Those are likely moth eggs... moths have a tendency to attach their eggs on metal screens that you might have in your windows or doors. Here is a video of a moth laying eggs on glass: https://www....
JimN's user avatar
  • 2,049
2 votes

Why is egg white alkaline?

In the terms of the question, this can be regarded as calcium hydroxide, with the carbonate being in the form of calcium carbonate. Calcium hydroxide is a stronger base (pH of aqueous solution at 1mm =...
David's user avatar
  • 26.2k
2 votes

How is in-vitro fertilization technically achieved?

After following user David's hints, I have collected some videos that answer the questions I posted: Regarding to needle manufacturing, there exist machines able to create micropipettes (this is how ...
Claudi's user avatar
  • 121
1 vote

Exact meaning of the term "clutch"

Well, strictly speaking from an etymological viewpoint, a clutch is: "a brood, the number of eggs incubated at any one time," in reference to chickens, 1721, a southern England dialectal variant ...
theforestecologist's user avatar
1 vote

Stem cell research and female egg synthesis

I suppose that there is no connection between producing egg from somatic cells and stem cell research. The thing that you have mentioned: "produce a female human egg from other female body cells" was ...
Dror Hilman's user avatar
1 vote

Would some dinosaur egg be the most massive cell that ever existed? Are dinosaur egg relatively small compared to eggs of modern birds?

The largest known dinosaur eggs were the size of a basketball. The egg of an ostrich is also very large, comparable in size to dinosaur eggs. The reason why even the very large dinosaur laid ...
Triceratops's user avatar
  • 1,176

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