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Download - Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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Page 1: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Hereditary Traits

Page 2: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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.

Page 3: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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.

Page 4: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Ear lobes

Free (dominant)

Attached

Page 5: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

White Forelock

A white forelock is a patch of white hair, usually located at the hairline.

With (dominant)

Without

Page 6: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.
Page 7: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Dimples

With (dominant)

Without

Page 8: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Thumbs

Straight (dominant)

Curved

Page 9: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Pinky finger

Straight

Bent (dominant)

Page 10: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Mid-digit hair

With (dominant)

Without

Page 11: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Red-Green Colour blind

Everyone should be able to read the number 12

Page 12: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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.

Page 13: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Normal vision should read the number 29.

Red-green deficiencies should read the number 70.

Total color blindness should not read any numeral

Page 14: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Normal color vision should read the number 5.

Red-Green color deficiencies should read the number 2.

Page 15: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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.

Page 16: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

Tongue

Roll (dominant)

Unable to roll

Page 17: Hereditary Traits. A quick review of terms Dominant Dominant a trait that will appear in the offspring if one of the parents contributes it Recessive.

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


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