AP BIOLOGY

Detailed explanation-1: -Sex-influenced traits are autosomal traits that are influenced by sex. If a male has one recessive allele, he will show that trait, but it will take two recessive for the female to show that same trait. One such gene is baldness. A lot of sex-limtied traits can determine parental carriers by using a pedigree.

Detailed explanation-2: -The pattern of inheritance of X-linked traits is not dominant or recessive, just X-linked. Acta Paediatr Suppl.

Detailed explanation-3: -Patterns for Sex Influenced, Male Dominant Inheritance If the mother has the trait, all of her sons will have it. Two parents who have the trait may have daughters without it. Parents without the trait may have sons with it. Generally, more males than females have the trait.

Detailed explanation-4: -Sex-linked traits are determined by genes located on the sex chromosomes. Sex-limited traits are determined by genes located on autosomes and express only in one sex. While these traits are responsible considerably for sexual dimorphism, sex-influenced traits do not show distinctive expression between women and men.

Detailed explanation-5: -Sex-influenced dominance is the phenomenon in which the manifestation of a phenotype of a gene in heterozygosity depends on the sex of the individual. For example hereditary baldness is a dominant phenotypical form if the individual is male and it is a recessive form if the individual is female.