Ch 13 Flashcards
What is a genome?
A) the complete compliment of an organism’s genes.
which of the following statements about genes is incorrect?
D) one gene only is used in a specific cell type.
Asexual reproduction and sexual reproduction differ in all but which of the following ways?
E) asexual reproduction is utilized only by fungi and protists, whereas sexual reproduction is utilized only by plants and animals.
If a horticulturist breeding gardenias succeeds in having a single plant with particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a lot of plants?
C) Clone that plant asexually to produce an identical one
Asexual reproduction results in identical offspring unless which of the of the following occurs?
D) mutation
The human genome is minimally contained in which of the following?
A) every human cell
A gene is location along a chromosome is known as which of the following?
C) locus
What is a karyotype?
E)A display of every pair of homologous chromosomes within a cell, organized according to size and shape
At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
B) metaphase
The human X and Y chromosomes
D) D) include genes that determine an individual’s sex
Which of the following is true of a species that has a chromosome number of 2n = 16?
C) each cell has eight homologous pairs
Eukaryotic sexual life cycle show tremendous variation. Of the following elements, which do all sexual life cycles have in common? I. Alteration of generations II. Meiosis III. Fertilization IV. Gametes V. Spores
C) II, III, and IV
Which of these statements is false?
D) at sexual maturity, ovaries and testes produce diploid gametes by meiosis.
And animals, meiosis results in gametes, and fertilization results in
C) zygotes
Referring to a plant sexual life cycle, which of the following terms describes the process that leads directly to the formation of gametes?
B) gametophyte mitosis