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3 years ago

Which waves can you see? microwaves radio waves visible light waves gamma rays

2 answers:

8 0

You can see light waves. Some are not visible, but the ones we can see are what causes light. The other waves cannot be seen. :D

andrey2020 [161]3 years ago

6 0

I think you can see Visible light waves, the other ones are all unseeable.

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A nurse observes a 10-month-old infant chewing on the security alarm attached to his identification bracelet. the nurse should:

horrorfan [7]

The answer to this question would be: 3. distract the infant with a more appropriate toy.
An infant wouldn't understand the instruction given by the nurse. It is more appropriate to give the infant another toy to distract him/her from the bracelet. The identification bracelet is important to make sure that a procedure is done for the right patient and shouldn't be removed before the admission is over.

3 0

3 years ago

All vertebrate embryos have _____ at some point during embryonic development, indicating a common evolutionary ancestor

aivan3 [116]

All chordates chare four structures. One of the is the tail. All vertebrate embryos have _a tail__ at some point during embryonic development, indicating a common evolutionary ancestor.

<h3>What is the relationship between chordates?</h3>

The evolutionary relationship between species is reflected in the similarities or differences in the patterns of embryonic development.

All chordates belong to the Chordata phylum, and share four main characteristics,

Notochord, which is a precursor of the dorsal spine.
Nerv cord, dorsally located and parallel to the notochord.
Pharyngeal clefts
Tail

All chordates express these structures at some point in their lives, especially in the early stages of embryogenesis. Many of them can be lost with animal development and become vestigial structures.

The tail is a vestigial structure in many vertebrates.

Vestigial structures are those body parts, genetically determined, that have been retained during the evolution of the taxonomic group but have lost or reduced their original function.

Such vestigial structures were plenty functional in the ancestors of new species, but now are typically degenerate, stunted, or rudimentary, and tend to be much more variable than homologous non-vestigial parts

All vertebrates develop a tail at some point in their embryonic life, even humans. However, this structure lost its original function in several species, so after a period of embryogenesis, this tail disappears, and its forming vertebras get fussed with each other composing the coccyx.

In many animals, the function of the tail is to stabilize, equilibrate and mobilize. But in humans, for instance, the coccyx has lost this function but is still an area of muscle insertion.

The correct option is Tail.

All vertebrate embryos have _a tail_ at some point during embryonic development, indicating a common evolutionary ancestor.

You can learn more about chordates at

brainly.com/question/12406059

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3 0

2 years ago

Why might a phylogeny based only on molecular data show a different pattern of relationships than a phylogeny of the same taxa b

Kitty [74]

A phylogeny of the same taxa based only on morphological traits:

Some highly conserved genetic sequences can result in unrelated species appearing closely related in a molecular phylogeny, and not reflect the same pattern as the morphologic phylogeny.

Gene sequence changes may not result in morphological changes.

Gene sequences always provide more data than morphological traits.

Morphological analyses always provide more data because each morphological trait is the result of the expression of many genes.

The molecular data may be based on the analysis of introns, which aren't expressed and don't contribute to the evolutionary history of a group of taxa.

Why is molecular data more accurate?

Phylogenetic trees reconstructed from molecular sequences are often considered more reliable than those reconstructed from morphological characters, in part because convergent evolution, which confounds phylogenetic reconstruction, is believed to be rarer for molecular sequences than for morphologies

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6 0

1 year ago

Punnett squares provide an easy way to predict the possible genotypes for an offspring, but it is not practical to perform a Pun

castortr0y [4]

Answer:

True

Explanation:

There are certain limitations associated with the Punnett Squares. They are not useful in case of complex genetic inheritance such as linkage between two genes. In case of linkages it becomes difficult to estimate the distribution of genotypes and phenotypes. For example in case of Nail-patella Syndrome and gene associated with blood group two genes lie on the same chromosome in close vicinity and hence there are high chances of inheritance of these traits in the offspring from the parent thereby causing random distribution of the two traits. This random distribution cannot be captured through punnet square.

The same problem is associated in case where a single gene is determined by multiple genes with graded effects of each gene.

8 0

2 years ago

Describe one model of the structure of a nucleus.

Marta_Voda [28]

Nucleus for what?

Atom? Animal Cell? Plant Cell? Each have different structures.

5 0

3 years ago