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MArishka [77]
3 years ago
13

By calculating genetic distance, and using rate of change from molecular clock, researchers can estimate when two lineages diver

ged
Biology
1 answer:
matrenka [14]3 years ago
5 0

It is true that by calculating genetic distance, and using rate of change from molecular clock, researchers can estimate when two lineages diverged.

 

To add, genetic distance<span> is the term used to describe the number of differences or mutations between two sets of Y-chromosome DNA or mitochondrial DNA test results. Having zero genetic distance equates to having an exact match and that there’s no differences in the two results presented. A lot of people mistakenly assume that genetic distance is the number of generations to a common ancestor, but that is NOT AT ALL what genetic distance means. Genetic distance can also be identified by how many a particular match’s mutation difference to the participant.</span>

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Describe why biodiversity increased with the introduction of sea otters in California over the last fifty years
Naya [18.7K]

Answer:

Due to increment in food chains.

Explanation:

Biodiversity is actually the measure of changes in the ecosystem, genetic levels and various species levels. The sea otters introduced in California over last fifty years, increased the diversity in the ecosystem as well as in species too, thus changing the biodiversity. This was the impact of increase in food web in that particular area, the number of consumers, producers and prey increased thus increasing the biodiversity.

7 0
3 years ago
What does it mean if there are two different alleles for a trait
lara31 [8.8K]

Answer:

They are know as heterozygous alleles.

Explanation:

Two IDENTICAL alleles are known as homozygous<em> </em>alleles.

I hope this helps you understand the difference, and as always, I am joyous to assist anyone at any time.

3 0
3 years ago
The drawing below illustrates a small portion of the molecules that make up a cell membrane. What is the primary function of the
Ket [755]

Answer:

The correct option is b

Explanation:

Phospholipids are lipids that contains a phosphate group, which forms the "head" of the molecule and is hydrophilic (water loving). The "tail" of phospholipids is made of two fatty acids which are hydrophobic (water fearing). The phospholipid in the cell membrane acts as a selectively permeable barrier that regulates what goes in and out of the cell <u>thereby protecting the cell from some external molecules and ions</u>.

7 0
3 years ago
You water three sunflower plant with salt water. Each plant receives a different concentration of salt solutions . A fourth rece
Lorico [155]

Answer:

Independent - Water/Type of water (salt and pure)

Dependent - Height of plant

Controlled - Amount of water

Explanation:

Independent is what the experimenter manipulates (in this case being the type of water.)

Dependent is what the experimenter measures and is a result of the independent (in this case being the height of plant)

Controlled is what you are trying to keep the same (in this case the amount of water you give each plant.)

6 0
3 years ago
How the conditions on early earth made the origin of life possible?
kiruha [24]
Water, air, food. and heat.
7 0
4 years ago
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