lesson 2

Cards (12)

  • Sex-influenced Traits are autosomal traits influenced by sex, with males showing traits with one recessive allele and females needing two recessive alleles to show the same trait
  • Sex Linkage - an association between genes in sex chromosomes where characteristics appear more frequently in one sex than the other
    1. x linked Traits Examples
    • hypertrichosis of the ears
    • webbed toes
    • porcupine
    1. y linked Traits Examples
    • color blindness
    • muscular dystrophy
    • hemophilia
    • congenital deafness
    • spinal ataxia
    • ocular albinism
    • brown teeth
    • congenital cataract
    • retinitis pigmentosa
    • diabetes insipidus
  • Sex-Linked-Traits are characteristics influenced by genes on the sex chromosomes, with humans often referring to traits influenced by genes on the X chromosome
  • Sex-limited Traits are determined by genes located on autosomes and express only in one sex, responsible considerably for sexual dimorphism
  • Recombination - a process where pieces of DNA are broken and recombined to produce new combinations of alleles
    1. sex linked Traits refer to characteristics influenced by genes on the X chromosome, with females having two X chromosomes and males having one X and one Y
  • Classroom Rules and Regulations of Sir Ben
    • Always wear complete uniform inside the classroom, except wash day
    • Surrender cellphones/tablets to the teacher's table before the lesson
    • Avoid unnecessary noise during discussion
    • Participate in group activity or individual performance
    • Avoid cheating
    • Avoid speaking negative/taboo words
    • Submit an excuse letter if absent
    • Maintain a healthy environment
    • Leave the place cleaner
    • Follow LOVE: (L)isten, (O)bserve, (V)erify, (E)xplain
    1. linked Traits are inherited from genes on the Y chromosome, transmitted from father to son
  • Sex-limited Traits Examples
    • lactation
    • peacock
    • ovarian cancer
    • prostate cancer
  • Sex-related Inheritance occurs when genetic traits are inherited on either the X or the Y chromosome with the concept of sex limited traits