Akey to recombinant dna technology (genetic engineering) is the ability to cut dna at specific sites. in a genome with 50% gc content, a restriction endonuclease with a 6-base pair recognition site (such as ecori, that cuts at gaattc) will cut, on average, once every nucleotides. answer with a whole number to fill in the blank.

Jane is blood type a her husband is blood type b. jane is puzzled because their daughter is type o. explain how the daughter inherited a blood type that neither of her parents had explain your answer

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Explain the significance of the increased cell specialization of the volvocine line