LECTURE 8 - Extrachromosomal Inheritance

Question 1

Mendelian principles emphasized in eukaryotes, the genes controlling the phenotype is in the ______

however, there are important traits that can be controlled by genes in the _____

Answer 1

nucleus

cytoplasm

Question 2

genes in the cytoplasm are _____ that act as agents for ______ _____

Answer 2

• extranuclear
• hereditary transmission

Question 3

EXTRACHROMOSOMAL INHERITANCE

• states that the transmission of these cytoplasmic elements are dependent on????

Answer 3

• the transmission of cytoplasm from parents to daughter cells

Question 4

does EXTRACHROMOSOMAL INHERITANCE follow mendelian laws?

Answer 4

No

Question 5

MATERNAL INHERITANCE

• a characteristic _____ in the results of a _____ ______ where the progenies show characteristics of their ___ parent

+ reason for this

• implies transmission through the ______

Answer 5

• difference
• reciprocal cross
• female
• female gamete contributes the majority of the cytoplasm to the zygote
• cytoplasm

Question 6

NON-MAPPABILITY

• the (inability/ability) of genes to show ______ (thus also affects the genes capability to be _____ )

Answer 6

• linkages
• mapped

*also shows extrachromosomal inheritance

Question 7

NON-SEGREGATION

• failure to show this under appropriate circumstance indicate ______ ______

Answer 7

extrachromosomal inheritance

Question 8

NON-MENDELIAN SEGREGATION

• states that when segregation occurs _____ with _____ segregation, ____-______ factors might have accounted for the phenotypic ______

Answer 8

• inconsistently
• chromosome
• non-chromosomal
• variation

Question 9

INFECTION-LIKE TRANSMISSION

• a ____ phenotype is transmitted (with/without) nuclear transmission; it seems _____ that ____ control the phenotype

Answer 9

• heritable
• without
• unlikely
• chromosomes

Question 10

INDIFFERENCE TO NUCLEAR SUBSTITUTION

• when heritable characteristics persist in the presence of nuclei known to have been associated with alternative characteristics, the ____ of ______ genetic material over the ____ may be ____ ____

Answer 10

• control
• nuclear
• characteristic
• ruled out

Question 11

the inheritance of CHLOROPLASTS was first reported in ____ by _____ ____ in _____ ____ of ____ ____ plants

Answer 11

1909

Carl Correns

Mirabilis jalapa (underlined) of four o’clock plants

Question 12

CYTOPLASMIC INHERITANCE OF CHLOROPLASTS

• leaf color includes (3)?
• follows ___ inheritance

Answer 12

• green
• white
• variegated (patches of green and white)
• maternal inheritance