1 Chromosome Theory of Heredity Everything you wanted to know but were afraid to ask!

1

Chromosome Theory of Heredity

Everything you wanted to know but were afraid to ask!

Walter _______

Genes described by Mendel are on the ___________.

Chromosomal Theory of HeredityGenes located on chromosomes and each gene occupies a specific ______ on the chromosome

_____ Genes

Genes which effect another ______.

Expected vs. Actual 25% gray

normal 25% black

small 25% black

normal 25% grey small

___% gray normal

___% black small

___% black normal

___% grey small

Linkage groups

Genes that move together and are ______ linked

Crossing-Over

Some ______ amongst chromosomes

Gene map specific loci for genes

11

Sex Linked traits

On the ___ chromosomes (________ are non-sex chromosomes)

XY- location on the _ chromosome. _ Linked trait

Everybody ’s Mutations!!!Latin- mutation means ______

Chromosomal MutationsIf a _____ chromosome changes

___-disjunction

Chromosomes don’t _______

_______: 3N, 4N – ____ to humans, better in plants

Gene mutation

Mutations in the _______

____ mutation is in a single base sequence

Ex.

AUG, UAG, AUU, CUAAUG, UGG, AUU, CUA

Frame shift mutation

Moves the reading _____ of the sequence

x… frameshift

THE CAT ATE THE RAT

THE CTA TET HER AT

Gene expression

Genes code for _____

_____ and enzyme to cause phenotypes

________ dominance

ex. carnation colorenzymes don’t completely ________

__________

Both alleles show up.No small case lettersex. Blue chickens

________ Inheritance

Many genes causing phenotype

Karyotype

DiploidCells

HaploidCells