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gtnhenbr [62]
3 years ago
13

Terry saved some of the tooth-like objects within the hagfish's round mouth to analyze their composition in his mentor's biochem

istry research lab. Terry will find that they are composed of the same protein found in tetrapod ________.a. scalesb. bonesc. teethd. cartilage
Biology
1 answer:
Triss [41]3 years ago
7 0

Answer:

The correct answer is option a. "scales".

Explanation:

The missing information of this question is the following:

"Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a s*cker, and two small eyes. Terry concludes it is a hagfish."

Gymnophiona is a group of amphibians characterized by having dermal scales as integumentary element. These amphibians are tetrapods and their scales are comprised of several layers of unmineralized collagenous fibers. The skeleton of the hagfish is made entirely of cartilage, therefore it is very likely that the tooth-like objects of hagfish's are made of cartilage, just like the scales of the tetrapod.

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Incomplete dominance
Westkost [7]

Answer:

D

Explanation:

Incomplete dominance is a phenomenon in genetic inheritance that occurs when the two alleles of a gene seem equally effective in their influence on a trait. It is a form of Intermediate dominance in which one allele for a specific trait does not completely mask the expression of its paired allele, as opposed to Mendel's law of dominance. Incomplete dominance results in a third phenotype different from the parent phenotypes but a combination of both.

In incomplete dominance, the intermediate/resulting phenotype is the heterozygous genotype.

Gregor Mendel discovered this concept of incomplete dominance in the flower of four o'clock plants when he crossed a purebred (homozygous) red-flowered (RR) with a purebred (homozygous) white-flowered plant (rr) to get F1 offsprings that are all heterozygous but have pink flowers (Rr). He later self-fertilized the F1 offsprings to produce a phenotypic ratio of 1:2:1 consisting of 1 red, 2 pinks, 1 white flower respectively.

This showed that the allele for red flower (R) is incompletely dominant over the allele for white flower (r), hence, producing an offspring with a different trait that arose from the blending of the two phenotypes.

Incomplete dominance is similar but different from co-dominance in the sense that, in co-dominance, both alleles/traits are expressed completely in the new phenotype produced while in incomplete dominance, the new phenotype is just a blending of the two phenotypes.

3 0
3 years ago
Which type of protein will fight disease?
myrzilka [38]

Proteins help form immunoglobulins, or antibodies, to fight infection. Antibodies are proteins in your blood that help protect your body from harmful invaders like bacteria and viruses. When these foreign invaders enter your cells, your body produces antibodies that tag them for elimination.

Hope this helps!

6 0
3 years ago
Read 2 more answers
What can diversity ensure?
marissa [1.9K]

Answer:

Diverse organizations serve many advantages in the workplace. A diverse workforce leads to increased creativity, problem-solving, recruitment and retention, and an increase in overall productivity.

6 0
3 years ago
Read 2 more answers
How mant hands does spider has
Fynjy0 [20]

I believe you mean legs. If you do, the answer you are looking for is: All spiders have eight legs. They also have two small appendages at the front that are modified legs; these are called pedipalps.

4 0
3 years ago
Read 2 more answers
You discover a new life-form, and study it under an electron microscope. you find that its cells have a peptidoglycan cell wall,
AysviL [449]

Answer:

              The new life form will come in domain of bacteria.

Explanation :

                   As we know that there are certain characteristic of bacterial cells which are listed below.

Composition of cell wall :

                                        Cell wall of bacteria is composed of carbohydrates protein complex known as peptidoglycan .

Presence of organelles :

                                       Bacterial cells lack all organelles except ribosomes

Presence of fatty acids in plasma membrane

The plasma membrane of bacterial cell is composed of a lipid bilayer made up of phospholipid. It contains fatty acids

Conclusion

                In microscopic studies of new organism all the characteristics features of bacteria have been found. So, this new life form belong to bacteria.


7 0
3 years ago
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