CP 10 Genetic Linkage

Question 1

TF inactivation of the X chromo can occur

Answer 1

T

Question 2

when can an X chromo be deavctivated

Answer 2

during embryonic development

Question 3

what are the 3 systems of genotypic sex determination

Answer 3

• X-O system
• Z-W system
• Haplo-diploid system

Question 4

what is the X-O system

Answer 4

organisms have Same types of sex chromos

Question 5

What is the Z-W system

Answer 5

• 2 diff types of sex chromos (XY in humans)
• Way sex is determined is differen

Question 6

what is the haplo-diploid system

Answer 6

• Egg laid that’s not fertilized = result in male
• Fertilized egg = result in female

Question 7

what is a chromosomal mutation

Answer 7

Any change from the normal structure or
number of chromosomes in a cell

Question 8

what is the result of an inactive X chromosome

Answer 8

• Remains inactive for the life
• Results in patches of cells with different active x chromos

Question 9

what is a nondisjunction mutation + whats the result

Answer 9

• Chromos don’t separate properly in meiosis 1
• 2 gametes with an extra chromo and 2 missing a chromo

Question 10

what is a mis-division mutation + whats the result

Answer 10

• Happens during second meiotic division
• Produce 2 normal, 1 with extra, 1 missing chromosomes

Question 11

what is an euploid

Answer 11

Individuals with complete set of chromosomes

Question 12

what is an aneuploid

Answer 12

Individuals with single chromosomes extra or missing

Question 13

what is a polyploidy

Answer 13

Individuals with more than 2 complete sets of chromosomes

Question 14

TF Males with an X-linked dominant trait pass the trait to all of their daughters and none of their sons

Answer 14

T

Question 15

TF Affected males must have affected father

Answer 15

F, Must have affected mother

Question 16

TF Affected female has affected mother OR father

Answer 16

T