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frutty [35]
3 years ago
13

What is the definition of epistasis?

Biology
1 answer:
ollegr [7]3 years ago
6 0

The definition of Epistasis in gene biology is Choice D: when the allele of one gene masks the phenotype of another gene

Definition:

When the phenotypic effect of alleles at one gene are masked by alleles of another gene.

In essence, a gene is said to be epistatic when its presence suppresses the effect of a gene at another locus.

It is important to know that Epistatic genes are often called inhibiting genes because of their effect on other genes which are described as hypostatic.

Additionally, there are six common types of epistasis gene interactions:

  • Dominant

  • Dominant inhibitory,

  • Duplicate dominant,

  • Duplicate recessive,

  • Polymeric gene interaction,

  • Recessive.

Read more:

brainly.com/question/24167831

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What can be inferred about a petrified log? the wood needed long ages before it could petrify the tree laid on the surface for l
RideAnS [48]

Answer:

the petrified log looks like the original tree.

Explanation:

A tree to be petrified first needs to be buried. An element laying on the surface can not be petrified because it is exposed to many different factors (such as<em> organisms, microorganisms, climatic conditions</em>, etc.), that affect the petrification process. So, in the case of a fallen tree, first, it needs to be covered by many sedimentary layers. Once it is underground, it also needs the presence of underground water and minerals. Water replaces the original organic material with minerals (silica, calcite, and pyrite). This replacement process results in the conversion of the woody material into a fossil of the original material. Very often, the tree details are so preserved that the fossil looks exactly like the original trunk.

Depending on the preservation degree, a fossil can be useful for different studies about the past.

6 0
3 years ago
Draw the DNA strand separating down the middle is in the beginning of DNA replication
Aliun [14]

Answer:

This should help you understand more about DNA replication

and it also has a picture.

Download pdf
5 0
3 years ago
Which features do most stratovolcanoes and cinder cone volcanoes have in common?
Sergeu [11.5K]

Answer:

Option (2)

Explanation:

Strato-volcanoes are the steep, conical shaped, formed by the alternative beds of ash and lava. The magma in this type of volcano contains high silica content and are comprised of bubbles. When the gases are released from these bubbles, then a greater force is exerted from the bottom towards the surface. Due to this, they are very explosive and ejects a huge amount of materials during eruption. For example, Mount St. Helens .

Cinder cones are the simplest volcanoes with steep sides. They are made of the materials and semi solidified lava that are ejected from the vents of the volcano. Eruptions are often explosive due to the force exerted by the gas and the molten lava and are accumulated near the vent. For example, Paricutin.

<u>These two types of volcanoes are similar in terms of its eruption that is violent and explosive in nature. In addition to that, they both have steep sides. </u>

Hence, the correct answer is option (2).

5 0
3 years ago
Read 2 more answers
The synaptic knob releases acetylcholine into the synaptic cleft, which is received by receptors on the motor end plate. which s
wlad13 [49]
It portrays the neuromuscular junction of a skeletal muscle. 
The breakdown items are consumed by the pre-synaptic neuron by endocytosis and used to re-combine more neurotransmitter, utilizing vitality from the mitochondria. The Cytoplasm in the Synaptic Knob has a high extent of specific organelles. These incorporate smooth endoplasmic reticulum, mitochondria, and vesicles.
4 0
3 years ago
Thale cress is a plant that is genetically engineered with genes that break down toxic metals. Which type of organism is describ
Misha Larkins [42]

Any genetically engineered organisms is referred to as a transgenic organism.

A transgenic organism is any organism that was modified genetically or engineered by humans, for certain purposes, in this case, the function of the thale cress is to break down toxic metals in the water (cress plants grow on water).

Hope it helped,

Happy homework/ study/ exam!

3 0
3 years ago
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