A man who has hemophilia (X linked recessive) marries a woman who is a carrier. What percentage of the offspring have the disease?

50% of the progeny will be hemophilic

Explanation:

Available data:

Cross: A man who has hemophilia with a woman who is a carrier

Parentals)  X⁻ Y      x      X⁺X⁻

Gametes) X⁻     Y         X⁺     X⁻

Punnett square)   X⁻          Y

                 X⁺     X⁺X⁻        X⁺Y

                 X⁻     X⁻X⁻        X⁻Y

F1)  

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.