(Remember, sex-linked traits are written as XLETTER and Xletter, and the Y has no superscript.)

Hemophilia is a sex-linked recessive condition. A person with hemophilia lacks certain blood clotting proteins. A normal (non- hemophilia) allele is XH, and the recessive hemophilia allele is Xh. If a girl is born a hemophiliac, what are the possible genotypes of her parents?

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

About __ of the mass of the cell is water

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.