Answer:
False
Explanation:
Gregor Mendel, who was referred to as the FATHER OF GENETICS, discovered the principles that governs heredity. One of those principles which he called LAW OF INDEPENDENT ASSORTMENT states that the alleles of a gene randomly segregates into gametes independently of the alleles of another gene. This means that during gamete formation (meiosis), the separation of the alleles of one gene doesn't affect the separation of the alleles of another gene.
Mendel discovered this principle when he worked with two genes that was responsible for two distinct characters. Hence, in a cell that contains two genes responsible for two different characters in the organism, independent assortment will always occur during gamete formation. Although, in an organism that is homozygous for both traits (AABB or aabb), only one type of allelic combination will be produced in the gamete. However, the alleles will still randomly align and separate independently of one another during Metaphase and Anaphase stages of meiosis.
Answer:
It's a bad thing becaise plastic takes a SUPER long time to biodegrade. I don't think anything will happen to the soil necessary, but if you leave it there some wildlife might get hurt eating it. Pick it up for recycling
Explanation:
Hi There!
Tell me a little about prokaryotic and eukaryotes.
What do these types of cells have in common?
How are they different?
2 very common similarities between the types of cells is that they both have a certain type of structure and all cells have a plasma membrane, DNA, ribosome, etc. They are different in a way that eukaryotes have a "membrane-bound organelle" which usualy includes it having a nucleus. Whats cool is that eukaryotes can be multicellular or singled celled> For Example, plants, insects, and fungi. Prokaryotes don't have a nucleus or organelle (membrane bound).
Hope This Helps :)
Earth's<span> magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of conductive, molten iron. Loops of currents in the constantly moving, liquid iron create magnetic fields. From afar, the </span>Earth<span> looks </span>like<span> a big </span>magnet<span> with a north and south pole </span>like<span> any other</span>magnet<span>.</span>
The given question is incomplete, the complete question is:
A student carries out PCR using the following steps: Step 1: 94°C for 1 minute Step 2: 60°C for 30 seconds Step 3: 72°C for 30 seconds After subjecting his PCR reaction to gel electrophoresis, the student sees no PCR product on the gel. What error(s) might he have made? (Select all that apply.) a. He carried out step 1 at too low a temperature. b. He carried out step 1 at too high a temperature. c. He carried out step 2 at too low a temperature. d. He carried out step 2 at too high a temperature. e. He carried out step 3 for too short a time.
Answer:
The correct answers are options d and e, that is, the student might have carried the step 2 at too high temperature, and he would have carried the step 3 for a brief duration.
Explanation:
In the PCR, step 1 is termed as the denaturation step and it generally takes place at 94 or 95 degrees Celsius. Thus, option a and b are incorrect. In step 2 of the PCR reaction, the combination of primers takes place with the template, this step is known as the annealing step. The temperatures in the annealing step are important for PCR, if the temperature of annealing is too much, it can lead to no product formation, and if it is too less than the formation of products would be non-specific.
In step 3 of the PCR reaction, the temperature is extended and the Taq polymerase enzyme is used to perform the reaction, which supplements nucleotides to the newly developed stand, at the frequency of 1 kilobase pair per minute. If the product of PCR is one kilobase or more, then a 30 seconds extension time would be not enough and the product would fail to appear. Hence, the correct options would be d and e.