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il63 [147K]
3 years ago
13

What is not a main principle of the cell theory?

Biology
1 answer:
Zanzabum3 years ago
5 0

Answer: c not all cells have a nucleus (prokaryotic cells don’t)

Explanation:

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What does it mean for a trait to be autosomal?
Soloha48 [4]
Autosomal recessive is one of several ways that a trait, disorder, or disease can be passed down through families. An autosomal recessive disorder means two copies of an abnormal gene must be present in order for the disease or trait to develope. Here's the website where I got this from if you want to know more, hope this helps! :) Source: https://www.nlm.nih.gov/medlineplus/ency/article/002052.htm
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3 years ago
What factor has the greatest effect on species diversity
umka2103 [35]
I believe the correct answer is natural selection.

Natural competition and the fight for “survival of the fittest” is what pushes diversity the most.
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3 years ago
Explain how restriction enzyme digestion results would change if
emmainna [20.7K]

Answer:

The foreign gene might be lost

Explanation:

Restriction enzymes have two properties useful in recombinant DNA technology.They cut DNA into fragments of a size suitable for cloning at palindromic sites. Many restriction enzymes make staggered cuts that create single-stranded sticky ends conducive to the formation of recombinant DNA. The foreign might be cleaved and removed from the plasmid. plasmid is an extrachromosomal strand in bacteria.

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3 years ago
A ______________ is a change in matter in which the substances that make up the matter change into other substances that have ph
Eduardwww [97]

Answer:

chemical change.

Explanation:

There are two types of changes in matter: physical change and chemical change.

physical change- it is a change in matter that alters only its physical properties or its physical appearance. This type of change is reversible. For example- freezing of water, the water turns into solid ice and it can be reversed by melting the ice.

chemical change- it is a change in matter that alter its chemical and thus its physical properties. Most chemical changes are irreversible. for example- burning of paper, results in black soot and ashes- Thus changing both physical and chemical properties.

7 0
3 years ago
Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified
taurus [48]

Answer:

The correct answer is A). The two forms are observed to interbreed successfully where their habitats overlap.

Explanation:

According to the biological species concept, the members in a population which interbreed with each other and produce viable offsprings comes under the same species. This classification does not involve morphology because even organisms having the same morphology can be of different species because they do not interbreed with each other in nature.

So here myrtle warbler and Audubon's warbler must be found interbreeding with each other and producing offsprings which have good survival rate and reproductive capability so this information might allowed scientists to reclassify these bird in the same species because only members of same species interbreed with each other. So the correct answer is A.

5 0
3 years ago
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