Question

please answer all of the questions

43) In heteroplasmy, adult cells ha y, adult cells have variable mixture of non of normal and abnormal organelles. ve organs are said to be all of the above 44) Organisms with both male and female repre except a. Dieceous b. Hermaphroditic c. Bisexual d. monoecious TRUE OR FALSE 45) Mitochondrial mutations are passed equa ed equally to offspring by both males and females. 46) Endosymbiotic relationships are said to os are said to be non-beneficial to any organisms 47) Offspring's phenotype is under control of nuclear & of nuclear gene products present in egg 48) Nondisjunction occurs only during meiosis 49) During trivalent three copies of chromosome are > of chromosome are synapsed 50) Neutral petites lack mtDNA or lack portion of it

Answer 1

43.(FALSE)

In heteroplasmy,cells have variable mixture of nuclear and extranucleaex DNA.

Example: presence of mitochondrial and plastid Dna

44.a(dieceous)

These are the organisms where male and female reproductive organs are found in different individuals.

45.(False)

Mitochondria of the mother remains inside a zygote only.sperm only contributes nuclear chromosomes.Hence male will not pass it's mitochondrial DNA to the offsprings.

46.(False)

Endosymbiotic organisms are mutually beneficial to each other.The word endo signifies the living of the organism within host( most of the time).

47.(False)

Mitochondria DNA (extra chromosomal) can also affect the phenotype.

48.(False)

Nondisjunction can occur in meiosis 1,meiosi 2 and mitosis.

49.(False)

During trivalent 2 copies of the chromosome are synapses.However the accidental separation of chromosome from its centromere may produce another.

50.(False)

Petites are formed either due to lack of mtDNA or abnormalities in nuclear DNA.