In the animal subkingdom _____, the animals lack symmetry and possess neither tissues nor organs.
Fill in the blank(s) with the appropriate word(s).
Parazoa
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Given that fertility rate is defined as each woman producing exactly enough offspring to replace herself and her offspring's father, if the fertility rate is sustained for a generation, then _____
A) r = 0 and there is zero population growth B) 0 < r < 1 C) r = 1 D) r > 1 E) population size is at carrying capacity
How are DNA and RNA similar?
a. They are both comprised of long chains of nucleotides. b. They are both comprised of deoxyribonucleic acid. c. They are both comprised of long chains of glucose. d. None of the above.
The human genome comprises:
a. an X and a Y chromosome. b. a homologous pair of chromosomes. c. 46 chromosomes. d. 46 pairs of chromosomes. e. 23 chromosomes.
A son is born with Kleinfelter's syndrome and hemophilia. His father was normal and his mother was a carrier for the recessive X-linked blood clotting disorder. What occurred in meiosis to produce this genetic outcome?
A) nondisjunction in meiosis I of the mother B) nondisjunction in meiosis I of the father C) nondisjunction in meiosis II of the father D) nondisjunction in either meiosis I or meiosis II of the mother E) nondisjunction in meiosis II of the mother