Answer:
1. 1/2
2. 1/2
3. 1/4
Explanation:
Let the allele for freckles be A or a while that of dimples be B or b.
A person without freckles but heterozygous for dimples = aaBb
A person who has freckles (whose mother has no freckles) but no dimples = Aabb
aaBb x Aabb
Offspring
4 AaBb - freckled and dimpled
4 Aabb - freckled and non dimpled
4 aaBb - non freckled and dimpled
4 aabb - non freckled and non dimpled
1. <em>Probability that the parents will have a dimpled child</em> = 8/16 or 1/2
2. <em>Probability that they will have a child with freckles</em> = 8/16 or 1/2
3. <em>Probability that they will have a child with freckles and dimples</em> = 4/16 or 1/4
<u>See the attached image for the Punnet's square analysis of the cross</u>
If the genetic code used four bases as a code instead of three then <u>256 units could be encoded.</u>
<u>Explanation:</u>
There are 4 DNA bases that can make up the hereditary code. On the off chance that the codon for every amino corrosive was comprised of just 2 bases, just 16 unique codons would be conceivable.
<u>Given:</u>
1 Bases = 
DNA bases
2 Bases = 
DNA bases
3 Bases = 
DNA bases
4 Bases = 
DNA bases
Unmistakably this isn't sufficient. Be that as it may if every ha a codon made up of 3 bases (similar to the case) there are 64 potential blends which are all that could possibly be needed.
So for 4 bases, just 256 unique codons would be conceivable.
Answer:
The polarity of membrane phospholipids
Explanation:
The inner core of membranes is made of nonpolar tails of phospholipids which in turn makes the membranes impermeable for polar, large and charged substances since these substances cannot cross the non-polar inner core. The saturated hydrocarbon tails pack tightly and make membrane less permeable while cholesterol affects the membrane permeability by interacting with non-polar tails.
Higher temperatures make the membrane more fluid and more permeable while at lower temperatures, membranes are more rigid due to tight packing of hydrocarbon tails and less permeable. The polar heads of phospholipids make the inner and outer surface of the membrane. Therefore, the polarity of phospholipids does not affect the membrane permeability.
Answer:
A.can be controversial
B.have promise in agriculture,medicine and clean energy
The right answer is B.
The operator is the segment of DNA to which a chemical signal (a regulatory molecule) binds. It can be either a repressor signal or a transcription activating signal (DNA operator) or translation (RNA operator) of the genes of the operon.
In the case of loperon lactose, the operator is located downstream of the promoter so that it can regulate the trancription. In the case of this experiment, the promoter has been removed from the opterator, and in this case, can no longer regulate the transcription, and therefore the synthesis will be continuous (unregulated).
Another interesting fact is that beta galactosidase will not be transcribed since it will be positioned upstream of the promoter (so the E response is false).
