Which of the following is characteristic of mosaic development?
a. The cells of the adult are very different from each other.
b. The fate of adult cells is predetermined in embryonic founder cells.
c. Adult cells are richly interspersed with proteins.
d. Embryonic cells have a wide range of possible developmental patterns.
e. Embryos have a wide range of morphologies, but all look identical as adults.
b
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In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite forms of both traits, how many of the offspring would be expected to be homozygous recessive for both traits?
A. 9 out of 16 B. 6 out of 16 C. 1 out of 16 D. 3 out of 16
Root formation in stem cuttings can be improved by
the application of a. synthetic auxins. b. abscisic acid. c. salicylic acid. d. citric acid. e. nitric acid.
A(n) ____________________ is a statement that explains what you should observe about the question being
addressed if the hypothesis is valid. Fill in the blank(s) with the appropriate word(s).
Which statement comparing spermatogenesis and oogenesis is true?
A) During oogenesis, four cells are produced with each sharing equally the cytoplasm from the parent cell. B) Men, but not women, can produce gametes throughout their adult lives. C) Spermatogenesis and oogenesis rely upon mitosis to produce gametes. D) Spermatogenesis, but not oogenesis, is an example of gametogenesis.