in organisms with X and Y chromosomes, many more genes can be found on the X chromosome than on the Y chromosome. In mammals , how might this deviate from traits being expressed, according to mendel.

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Explanation:

The fact that many more genes can be found on the X chromosome than on the Y chromosome means that genes that are limited to the X and Y chromosomes do not follow the Mendelian pattern of inheritance.

For recessive traits, it will ordinarily take 2 recessive alleles for a gene to be expressed according to Mendel (other things being equal). For organisms with X and Y chromosomes, only one recessive allele is required on either of the 2 chromosomes for the gene to be expressed.

For dominant traits, organisms can be true-breeding or heterozygous when the trait obeys Mendel's law. Organisms with X and Y chromosomes only require an allele for the trait to be expressed and the opportunity to be true-breeding or heterozygous does not arise.

In mammals with XY chromosomes, organisms with XX chromosomes are homogametic and those with XY chromosomes are heterogametic. The X chromosomes are homologous to one another but not to the Y chromosome.

Thus, recessive X-limited traits are usually more commonly expressed in organisms with XY chromosomes (because only one allele is needed) while any individual that inherits the Y chromosome automatically inherits the trait for the genes that the chromosome carries.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).