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A scientist sequences both strands ofa DNA molecule and determines that 30% of the nucleotides areadenine. The composition of the other nucleotides must be
A. 30% thymine, 30%cytosine, 30% guanineB. 70% thymine, 15%cytosine, 15% guanineC. 30% thymine, 20%cytosine, 20% guanineD. 30% thymine, butcannot determine % of cytosine and % of guanineE. 70% thymine, butcannot determine % of cytosine and % of guanine
Suppose that the following phenotypic classes were obtained in a test-cross: AB 987; Ab 999, aB 782 and ab 856. Using the chi-square test, what is the probability that the difference from expectations (1:1:1:1) is due to chance?
What carries genes for antibiotic resistance in prokaryotes?
In watermelons, the genes for green color and for short shape are dominant over their alleles for striped color and for long shape. Suppose a plant with long striped fruit is crossed with a plant that is heterozygous for both of these characters.
What kinds of mechanisms tend to isolate populations enough to promote genetic divergence?
dangerously thin a case study on the genetic codeat 65 years old henry blake was in excellent health and enjoying his
define the correct sequence of events in the synthesis.
What are the differences between 70s and 80s ribosomes.
The three homeodomain proteins ABD-B, ABD-A, and UBX are encoded by genes within the BX-C of Drosophila.
A water sample was analyzed to determine the concentration of bacteria in it. It was diluted as follows: 1ml of sample placed in 9ml of sterile water (tube A) from this solution, from that another 1ml was placed in 9ml of sterile water (tube B) an..
Some microbes turn the pH indicator blue in the OF-glucose medium. What are they metabolize in the medium? What alkaline by-product is produced?
How do the innate immune system and the acquired immune system work together to fight infectious agents?
Twenty g soil sample was added to 80 ml of water to make the final volume of 100 ml (tube A). Then, ten ml of the ‘tube A' solution was taken and added to 90 ml of water.
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