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suppose a restriction enzyme recognizes the six-base sequence in a double strand of dna.

caattg

gttaac

if the cut creates two sticky ends that are four bases long, what will one of the exposed sequences (sticky ends) be?

question 8 options:

a. caat

b. gtta

c. aatt

d. taac

The possible four base long sticky end will be AATT or TTAA.

Option C.

The restriction endonuclease enzymes are those enzymes which can cut a portion of DNA at specific base pair sequences. This restriction endonucleases sometime cuts the DNA in such a manner that often some of the nucleotides become pairless and remain as lone nucleotides, which are called as sticky ends.

Here, the said restriction endonuclease cuts the DNA at the sequence GTTAAC. If the DNA has a sticky end with 4 sticky nucleotides, then the possible cuts are at the portions G / TTAAC and at C/ AATTG. Here the portion TTAA or the portion AATT remains pairless in the cut portion which is the four nucleotide long sticky base.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

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gokuson

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.