Which mutation would be most beneficial to an elephant and its descendents?

1 answer:

8 0

The correct answer is (a.) a mutation of the hemoglobin allowing better oxygen-carrying capacity. The mutation of the hemoglobin that allows a better oxygen-carrying capacity would be the most beneficial to an elephant and its descendants.

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Which of the following are some examples of rapid environmental changes? A) Succession B) Fires C) Weather D) Landslide

kenny6666 [7]

Weather is an example of rapid environmental changes.

Explanation:

Environment refers to our natural world surroundings. Rapid means fast or quick. Weather around us keeps changing as the earth rotates and revolves around the sun. It changes depending on the month of the year or may change from day to night. You can also note the room temperature at different times in a day, it keeps changing mostly minorly but it does change. There are sunny, foggy, rainy, cold etc days and hence we can say that weather is example of rapid environmental changes.

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3 years ago

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Scientists claim that global climate change is threatening many species with extinction. Which statement provides the strongest

solniwko [45]

Answer: Option B

Explanation:

The animals that live on the earth in many different regions because they are adapted to live in a particular habitat. The animals of the polar regions cannot adjust living the Sahara desert and the reptiles living in the desert cannot live in polar regions.

But many of the species are dependent on the seasonal change and they only emergence or produce during specific period of time.

But if due to global climatic change there will be no emergence of particular species and their species will be extinct over a period of time. So, the global temperature needs to be constant in order to support life of the species dependent on the seasonal temperature change.

8 0

3 years ago

An autotroph captures energy from other sources and does not actually produce energy because

tankabanditka [31]

The answer is because energy cannot be created or destroyed.
hope this helps!

3 0

3 years ago

Choose the true statement(s) about mutations. To be marked correct, you'll need to select all true statements, as there may be m

Kazeer [188]

Answer

All four options ( A,B,C,D ) are true about mutations.

Explanation:

A- Mutation can provide an evolutionary benefits

As mutation helps in creating DNA sequence ,new allele(variant of gene) for a specific gene , thus mutations is known to be the first step of evolution.

B- Mutation leads to genetic and phenotypic variation within the species.

In mutation, genetic variation (difference between individual/population) takes place as new alleles are created ,random matings ,fertilization and during meiosis , recombination of homologous chromosomes. One of the type of mutation called gene mutation give rise to genetic variations.

Its an exceptional case of phenotypic variations ,as mostly there is no effect of mutation on phenotypic variation. Very few mutations lead to phenotype variation and in case mutation takes place in phenotype variation ,making the organism well suited to the environment, the a rapid change in the characterstics of the individual species is seen.

C- In humans, the somatic cell mutation are not passed in offsprings.

Somatic cells are present in all over the body except in the cells that give rise to gametes( ie. egg and sperm cells) and produces offsprings . Thus somatic cells are absent in gametic cells ,therefore mutation cannot be passed to human's offsprings or children.

D- Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.

Due to their fast growth ,bacteria evolve quickly and share genes with each other and even between the species ,also the mutation that are helpful spread faster in bacteria.

In humans, the silent mutation in human cells cause many genetic disorders like Laron dwarfism. About 99.8% genes are silent mutation.

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3 years ago

An organism's appearance, trait or other detectable characteristic is a what?

kramer

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