Chromosomal Basis of Inheritance

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52 cards   |   Total Attempts: 188
  

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Front Back
Mendelian Inheritance has its physical basis in the behavior of ____________.
Chromosomes
______ are located on chromosomes
Genes
The behavior of chromosomes during meiosis accounts for the ____________ and ________________
The law of segregtion and independent assortment.
The chromosome theory of inheritance states that:
Mendelian genes have specific loci on the chromosomes and it is the chromosomes that undergo segregation and independent assortment.
Law of segregation
Two alleles for each gene separate during gamete formation
Law of Independent Assortment
Alleles of genes on nonhomologous chromosomes assort independently during gamete formation
_____________ experiments wit fruit flies provided evidence that genes are on chromosomes
Thomas Hunt Morgan
Why fruite flies for Morgan's genetic studies ?
-They breed at a high rate
-A generation can be bred every two weeks
-They have only four pairs of chromosomes
Normal phenotypes in the fly populations are called _______ types, while alternative types are called_______types.
Wild types; mutant types
When Morgan mated males flies with white eyes and female flies with red eyes, the F2 generation had _______flies with _____eyes.
Male; white
The mutant white-eye allele was determined to be located on the _______ chromosome.
X
Morgan's findings supported the _________________
Chromosome theory of inheritance
Question 13
Review the cross
Review the cross
Linked genes are ____________ because they are located near each other on the same chromosome
Inherited together
What are linked genes ?
Genes located on the same chromosome that tend to be inherited together