The correct answer is it decreases genetic diversity only by reducing population size.
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The great explanation for this is a bottleneck effect, which is an extreme example of genetic drift. The bottleneck effect occurs when the size of a population is reduced due to a catastrophe. When it happens, only a small, random number of individuals survive the event and pass through the bottleneck. Thus, the genetic composition of the random survivors is now the genetic composition of the entire population which means that the genetic diversity is reduced.</span>
Answer: B Co-dominant alleles
Explanation: The coat of a roan cow consists of both red and white because the two alleles are codominant. Codominance occurs when two alleles outwardly express themselves equally. In codominance, neither of the allele is completely dominant rather they are equally dominant. None is able to mask the effect of the other. The two alleles express themselves equally in the phenotype of the organism. This means that in a roan cow, the allele for white fur is dominant and the allele for red fur is equally dominant, thus they manifested equally as a mixture of both red and white furs.
Before a cell can enter cell division, it needs to take in nutrients. All of the preparations are done during interphase.<span> Interphase is a series of changes that takes place in a newly formed cell and its nucleus, before it becomes capable of division again. It is also called preparatory phase or intermitosis.</span>
Answer:
1/65,536 = 0.001523 %
Explanation:
A: normal allele
a: recessive allele causing PKU
The probability that Rosie and Ross have one child with PKU will be >>
Aa x Aa = 1/4 AA; 1/2 Aa; 1/4 aa
In consequence, the probability that Rosie and Ross have eight children with PKU will be >>
(1/4)⁸ = 1/65,536 = 0.001523 %
Answer:
1) Altering the DNA of organisms is considered controversial because we do not know what circumstances might occur if the DNA which is being altered turns out to have adverse effect on the organism. There are also concerns that altering the genome and producing organisms with better traits might eradicate the particular wild type organisms on the whole.
2)Yes, there should definitely be a guideline as to who can you the recombinant DNA technology and up to what limits. If guidelines are not set up then it can lead to serious devastating results. We might end up making manipulations which can be very harmful for life. Hence, recombinant DNA technology should be used with much care and under strict guidelines.
3) The techniques in recombinant DNA technology has enable us to make precise changes in the DNA at a higher frequency but certain guidelines shall be set up to control the devastating results which might occur. The concern related to life shall be the first and foremost concern while practicing such techniques.