Both the nucleus in the head of the sperm and the mitochondria in the midpiece of the sperm include genetic information (DNA) about the father
The offspring, however, contains only nuclear DNA from the father but both mitochondrial and nuclear DNA from the mother. Why does the newborn lack the father's mitochondrial DNA?
During fertilization, the nucleus of the sperm from the sperm's head and the nucleus of the ovum fuse. The remaining parts of the sperm, such as the midpiece and the tail, degenerate. The midpiece includes the mitochondria of the father; therefore, the genetic information from the midpiece will not be part of the zygote.
You might also like to view...
A person with the genotype GD/g for the galactosemia gene would have ____________________ of
the normal level of galactose-1-phosphate uridyl transferase. Fill in the blank(s) with the appropriate word(s).
In 1986, a nuclear power accident in Chernobyl, USSR (now Ukraine), led to high radiation levels for miles surrounding the plant
The high levels of radiation caused elevated mutation rates in the surviving organisms, and evolutionary biologists have been studying rodent populations in the Chernobyl area ever since. Based on your understanding of evolutionary mechanisms, which of the following most likely occurred in the rodent populations following the accident? A) Mutations caused major changes in rodent physiology over time. B) Mutation led to increased genetic variation. C) Mutation caused genetic drift and decreased fitness. D) Mutation caused the fixation of new alleles.
Which type of molecule is composed of (CH2O) units?
A) carbohydrate B) lipid C) nucleic acid D) protein
In respiration, in what stages is carbon dioxide produced?