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Katena32 [7]
4 years ago
7

Mutation is the only evolutionary mechanism that ________.

Biology
2 answers:
belka [17]4 years ago
8 0
Mutation is the only evolutionary mechanism that does little to change allele frequencies.
snow_tiger [21]4 years ago
4 0

Answer:

is the ultimate source of variation in natural populations

Explanation:

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A scientific theory is a well-tested explanation for a wide range of observations or experimental results. A hypothesis is a pos
Alborosie
I believe the answer is d-after the hypothesis has been confirmed through extensive testing.
5 0
3 years ago
Golgi apparatus non examples
olga nikolaevna [1]

Answer:

The examples of Golgi apparatus are stated below: Explanation: The Golgi apparatus is present in eukaryotic cells where many substances such as proteins are secreted. In plants, this organelle is referred to as dictyosome. In flagellate protozoa, it is called parabasal body. The collective term for all the Golgi apparatus in the cell is Golgi complex.

Explanation:

7 0
3 years ago
Humans have a gene, "T" that is involved in muscle formation of the tongue. Individuals with the one allele can roll their tongu
zhuklara [117]

Answer:

Tongue-rolling is dominant, and both parents were heterozygous

Explanation:

Tongue rolling is a type of variation in human beings. When allelic genes are not identical as in Tt, the condition is referred to as heterozygous. An individual with such a genotypic condition is referred to as a heterozygote.

Both parents had a genotype of Tt and they could roll their tongues because T is dominant over the t gene.

              T     t

  T         TT   Tt

   t         Tt     tt

TT : Tt : tt

1 : 2 : 1

In a heterozygous parent Tt, the chance of producing T gamete from both parents is each 1/2 each. Similarly the chance of forming t gamete is 1/2. Therefore, the chance of gamete T and t fusing to get genotype Tt is 1/2*1/2=1/4.

The ratios of phenotypes are 3/4 will be able to roll the tongue and 1/4 will not be able to roll the tongue.

The mode of inheritance was monohybrid inheritance since one characteristic like tongue-rolling is controlled by a single pair of hereditary factors contributed by both parents.

7 0
3 years ago
A monitor visits a site conducting a Phase III study for an investigational drug to treat depression. The monitor is surprised t
satela [25.4K]

Answer:

sell the drugs to doctors  

Explanation:

only came for the points

7 0
3 years ago
Naturally occurring solid mixture of one or more minerals and organic matter
alina1380 [7]

The naturally occurring solid mixture of one or more minerals and organic matter is known as a Rock.

A rock is a naturally occurring substances that is a solid mixture of one or more minerals together with organic matter.

<h2>Further Explanation;</h2>
  • Rocks are classified based on the chemical composition, texture and the way they are formed.  One type of rock may change from one form to another through a rock cycle.
  • Rock cycle is the process through each various rocks change from one form to another, normally an interchange between the three major types of rocks.

There are three major classification of rocks:

<h3>Sedimentary rocks </h3>
  • Sedimentary rocks are types of rocks that are formed through accumulation of sediments at low temperatures in tectonic layers and sinks. These sediments includes; pebbles, shells, sand and other material fragments.  
  • The sediments accumulates in layers and then harden into rocks over a period of time.
  • Examples of sedimentary rocks include; limestone and conglomerate
<h3>Metamorphic rocks</h3>
  • These are types of rocks that are formed as a result of changes that occurs due to intense heat and pressure under the surface of the earth. They result from action of heat and pressure on other rocks that pre-existed.
  • These types of rocks are characterized by shiny crystals, ribbon-like layers among other features.
  • Examples of metamorphic rocks are marble and gneiss

<h3>Igneous rocks </h3>
  • These are types of rocks that are formed as a result hardening and cooling of magma from volcanic eruptions. Magma may cool inside the earth or when on the surface of the earth as a result of volcanic eruptions. The lava from this eruptions cools and hardens to form metamorphic rocks.
  • Igneous rocks are glass-like and shiny with no crystals. They may also have tiny spaces and holes due to gas bubbles trapped during the cooling process.
  • Examples of igneous rocks include obsidian and basalt.
  • The three types of rocks may be further classified in terms of chemical composition, texture and formation.

Key words: Rocks, types of rocks, chemical composition

<h3>Learn more about;</h3>
  1. Rocks and rock types; https://brainly.in/question/5987245
  2. sedimentary rocks; https://brainly.in/question/3259075
  3. igneous rocks; https://brainly.in/question/272012
  4. metamorphic rocks; https://brainly.in/question/1206219

Level; High school

Subject: Geography

Topic:  Rocks

sub-topic: classification of rocks

4 0
3 years ago
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