The information in pedigrees that is useful for mapping disease genes is sometimes limited. this pedigree shows segregation of neurofibromatosis, which is a fully-penetrant, autosomal dominant condition, and a single nucleotide polymorphism, snp3. why are the genotypes of the children noninformative for determining the degree of linkage between the disease-causing gene nf and snp3?

List two limitations of natural selection

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.

Nucleus has two lobes; contains granules of lysosomal enzymes; functions in attacking parasitic worms and plays complex roles in inflammatory diseases like allergies and asthma. what blood cells are described?