1 / 17

Hereditary Traits

Hereditary Traits. A quick review of terms. Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive a trait that must be contributed by both parents in order to appear in the offspring. A quick review contd. Genotype

radha
Télécharger la présentation

Hereditary Traits

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Hereditary Traits

  2. A quick review of terms • Dominant a trait that will appear in the offspring if one of the parents contributes it • Recessive a trait that must be contributed by both parents in order to appear in the offspring.

  3. A quick review contd. • Genotype • This is the "internally coded, inheritable information" carried by all living organisms. This stored information is used as a "blueprint" or set of instructions for building and maintaining a living organism. • Phentotype • All the observable characteristics of an organism, such as shape, size, colour, and behaviour, that result from the interaction of its genotype with the environemnt. • The phenotype may change throughout the life of an individual because of environmental changes and the changes associated with aging.

  4. Ear lobes • Free (dominant) • Attached

  5. White Forelock • A white forelock is a patch of white hair, usually located at the hairline. • With (dominant) • Without

  6. Dimples • With (dominant) • Without

  7. Thumbs • Straight (dominant) • Curved

  8. Pinky finger • Straight • Bent (dominant)

  9. Mid-digit hair • With (dominant) • Without

  10. Red-Green Colour blind • Everyone should be able to read the number 12

  11. Those with normal color vision should read the number 8. Those with red-green color vision deficiencies should read the number 3. Total color blindness should not be able to read any numeral.

  12. Normal vision should read the number 29. • Red-green deficiencies should read the number 70. • Total color blindness should not read any numeral

  13. Normal color vision should read the number 5. • Red-Green color deficiencies should read the number 2.

  14. Normal color vision should read the number 45. • The majority of those with color vision deficiencies cannot read this number or will read it incorrectly.

  15. Tongue • Roll (dominant) • Unable to roll

  16. Now lets survey the class • How many: • Earlobes – attached, unattached • White forelock – with, without • Widows peak • Dimples • Thumbs – curved, straight • Pinky finger – straight, bent • Mid-digit hair – with, without • Red-green colour blind – yes, no • Tongue rollers – yes, no

More Related