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?
What will be an ideal response?
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...
Water and mineral ions are reabsorbed by the:
A. colon. B. small intestines. C. stomach. D. colon and small intestines. E. colon, small intestines, and stomach.
The secretions of the sweat and sebaceous glands provide ________ to the microbiota
A. water B. amino acids C. lipids D. All of the choices are correct.
If adult sponges are sessile, why can they still be classified as animals?
a. Sponge larvae are motile. b. Sponges have beating flagella. c. Sponges have an organ system. d. Sponges have bilateral body symmetry.s e. Sponges have a central nervous system.
A population of plants comes in two flower colors: blue and white. Crossing two blue-flowered plants produces mostly blue-flowering offspring and some white-flowering offspring
Crossing two white-flowered plants produces only white-flowering offspring. This indicates that the white-flowering plants are A) homozygous dominant for the flower color allele. B) homozygous recessive for the flower color allele. C) mutating. D) heterozygous for the flower color allele. E) in equilibrium.