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seraphim [82]
2 years ago
7

Difference between setae and chaetae

Biology
2 answers:
pychu [463]2 years ago
8 0
A chaetae <span>is a chitinous bristle or found on an insect.</span>
Schach [20]2 years ago
5 0
Both seta and cheta or chaete means bristles. I think the term can be used interchangeably . Just check this link:- http://en.wikipedia.org/wiki/Polychaete It about polychaetes a class of annelid worms. These are extracts form the passage:- Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called *chaetae, which are made of chitin. Indeed, polychaetes are sometimes referred to as bristle worms. Bundles of bristles, called *setae, project from the parapodia. http://en.wikipedia.org/wiki/File:Polychaeta_anatomy_en.svg Thats a cross section the terms have been used interchangebly.
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Each P1 parent of a monohybrid cross has completely identical genes<br> ture<br> false
lawyer [7]

Answer:

False.

Explanation:

Monohybrid cross may be defined as the cross done by taking the single character at the time. The monohybrid cross explains the concept of dominance and law of segregation.

The P1 parent of monohybrid cross doesnot have completely identical genes. This can be explained by the cross shown below:

Parent         Tt           ×       tt

Gamete         T  t           ×     t

Here, the parents are not identical.  

Thus, the answer is falsi.      

8 0
3 years ago
Without___, a species is not able to survive
KATRIN_1 [288]

the ability to reproduce.

4 0
3 years ago
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girl of normal stature is born to two parents with achondroplasia who have very short stature, especially disproportionately sho
Lynna [10]

Answer:

Option D, Zero out of four (0%)

Explanation:

As we know,  achondroplasia is an autosomal dominant pattern. Now a girl having normal stature mate with a partner who also has a normal stature.

Thus let us assume -

Allele for disproportionately short arms and legs be represented by "A"

while allele for normal stature be represented by "a"

Now genotype of parents would be

Female - aa

Male - aa

Thus,

aa x aa

aa, aa, aa, aa

Thus, option D is  correct.

6 0
3 years ago
At which site on the ribosome does the transfer rna dock initially during elongation?
Ugo [173]
<span>tRNA docks on the A site before being transferred to the polypeptide in elongation. One mnemonic to remember this is E (exit) site, P (polypeptide) site, and A (acceptor) site to remember the sites in a ribosome.</span>
7 0
3 years ago
What element is necessary for the production of thyroid hormone?
liubo4ka [24]

Answer:

Iodine

Explanation:

This is a trace element needed for the  synthesis of the two thyroid hormone ; T4- thyroxine and T3-triiodothyronine. Four iodine molecules are added in T4 synthesis, and  three for T3 synthesis. Generally T4 is the major hormone produced, but  biologically transformed into active form T3.

Iodine majorly and selenium are the two trace elements needed for thyroid hormones synthesis. Therefore required amount of iodine is important in daily diet. iIn adequate supply of this leads to under production of iodine called hypothyroidism. poor brain development ( especially in kids),and goiter.

Sea foods . eggs, poultry seaweeds are rich sources of iodine.

Conversely, when  excessive amount is present in the blood, autoimmune thyroid diseases can occur,including cancer developments in the thyroid gland due to hyper cell activities.

8 0
3 years ago
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