A mother who is a carrier of sickle cell produces a child with a father who is also has sickle cell. Whats the genotype of the mother?

Determine the most likely reason why natural selection may cause prezygotic reproductive isolating mechanisms to evolve if postzygotic reproductive isolating mechanisms are already present, but natural selection can never cause the evolution of

Did early land animals have gills as well as lungs?

Drinking non-potable water does not carry significant health risks. T or F

Why would water front realtors want to preserve the riparian zone? A) It increases the property value. B) It reduces property loss. C) It enhances wildlife. D) It provides privacy. E) All of the above

It is 10 a. m. and Julie is trying to decide what to prepare for tonight's dinner. She selects a frozen turkey breast and must thaw it before she can proceed with her cooking preparations.

You are testing 3 new herbicides, A, B, and C, to control itch grass and to compare the effectiveness of the herbicides with a currently used herbicide, Round-Up, and the treatment with just water.

Assume B = dominant; b = recessive. What will be the result if Bb mates with BB?

Why should you be suspicious of a small sample?

Where should recyclable waste - such as bottles, cans, paper, and packaging material - be stored?

Four-year-old Bindi loves to go to the nearby park to run around. One of her favorite activities is spinning in circles until she feels dizzy and falls down.