Cerebrospinal fluid is formed by filtration of blood in the

Point mutation is a change in a single base pair of a nucleotide. This comes as a results of mistakes made during DNA replication, induced by ultravoilet radiations, extreme heat and X-rays. There are three types of point or substitution mutations; change, deletion and insertion. The nucleotide bases are either mistakenly inserted, changed or deleted, thus changing the resulting protein or amino acid being coded for.

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3 years ago

Sexually-reproducing species have an advantage over asexually-reproducing species in their ability to

maw [93]

The sexual reproduction helps in having more variation among the offsprings. It also makes the offsprings more resistant to genetic diseases.

<h3><u>Explanation</u>:</h3>

Sexual reproduction is the process by which the gametes of the species fused together to form zygote which develops into an offspring. This offspring produced has the gene from both the parents . This genetic setup is not only copied from the parents but they undergo the crossing over and independent assortment which leads to variation among the offspring itself as well as they differ from their parents too.

This variation among the offspring as well as the crossing over helps to eleminate the lethal genes from the genetic pool. Thereby they help to get more resistance among the offsprings from diseases.

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3 years ago

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Organisms use different types of adaptations to aid in their survival. many different types of animals hibernate throughout the

zalisa [80]

Option (A) Torpor is the correct answer

Organisms that undergo hibernation have the ability to slow down their metabolism so as to lower the core temperature. This process is known as Torpor.

<h3>Why is torpor important for organisms undergoing hibernation?</h3>

Torpor is a state in animals where they lower all their metabolic activities and bodily functions so as to keep the body temperature low.

It is done by the animals to conserve resources in conditions where scarcity of food is there.

Some birds undergo torpor to conserve fat in the body.

Some animals use this technique of torpor to survive competition with other species.

These organisms come back to normal physiology when the conditions become favorable.