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Viktor [21]
3 years ago
6

Unlike exoskeletons ,endoskeletons

Biology
1 answer:
kari74 [83]3 years ago
4 0
Endoskeletons are the internal skeleton of an animal. These are found in vertebrates that have bones and cartilages. They are exactly located within the soft tissues of vertebrates that provide support, protect internal organs, and allow movement through muscle contractions that are attached to the skeletons.

Humans have an endoskeleton that consists of 206 bones in the adult body. Aside from providing support and structure to the body, the endoskeleton also stores minerals and lipids, and helps in the production of blood cells in the body.
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Natural selection is based on all of the following except a. genetic variation exists within populations. b. the best-adapted in
goldfiish [28.3K]

Individuals adapt to their environments and, thereby, evolve

Explanation:

Natural selection is the main process which advances evolution by aiding organisms to survive and produce more offspring through adapting more to their environment. Mutations, gene transfer, and genetic variations also drive evolution.

Both natural selection and evolution work on genetic behaviors in populations rather than individuals. Both natural selection and evolution are involved in generating changes over generations.  Examples of evolution is the disappearing of tail bone, decreased head size and for natural selection example is the long and short necked giraffe.

4 0
3 years ago
In the chart above, which of the sequences describes a negative consequence of deforestation?
Shalnov [3]

Answer:

C. Sequence C

Explanation:

Deforestation means cutting down of trees so it will lead to soil erosion and flooding

6 0
2 years ago
Alternation of generations in plants permits(1 point) neither mitosis nor meiosis. only meiosis. both mitosis and meiosis. only
nekit [7.7K]

Answer:

Alternation of generations in plants permits both mitosis and meiosis but at different stages.

The zygote will undergo many rounds of <u>mitosis</u> and give rise to a diploid multicellular plant called a sporophyte. Specialized cells of the sporophyte will undergo <u>meiosis</u> and produce haploid spores.

Hope it helps,

I'm not so sure.

7 0
3 years ago
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele, S, have sharp spines, whereas ho
Leviafan [203]

Answer:

Sharp-spined cactus

Explanation:

Given, that N allele is required for the production of spine and S allele will produce sharp sines.

True breeding sharp spined cactus: NNSS

spineless cactus: nn__ ( we can't fix the allele for second gene since it has not been mentioned as true breeding )

Their progeny: NNSS X nn__ = NnS_

So the progeny is going to be sharp spined because both the dominant alleles N and S are present.

5 0
2 years ago
Suppose you traveled back in time and located the first animals to have evolved feathers. You found that these animals were tree
Nana76 [90]

Answer:

Feathers initially evolved in a role associated with sexual selection.

Explanation:

In species where only males had feathers, these feathers can be considered to have evolved into a role associated with sexual selection. This is because in these species, males used their feathers as a sexual attraction for females, in this case, females chose the males that had more attractive feathers to mate and generate new individuals for the species. An example of this can be seen in the peacock, where the tail with lush feathers is only present in males and is intended to sexually attract females.

6 0
3 years ago
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