A lizard with a striped tail and a normal head is crossed with one having a normal tail and a spotted head. All of the F1
progeny are normal (no stripes or spots). What progeny would be expected to be produced by mating the F1 progeny with
each other, if the genes conferring stripes and spots were on different chromosomes?
a. equal numbers of normal, striped, spotted and striped, and spotted
b. 3 striped : 1 spotted
c. 9 striped and spotted : 3 spotted : 3 striped : 1 normal
d. 9 striped : 3 spotted : 1 striped or spotted
e. 9 normal : 3 striped : 3 spotted : 1 striped and spotted
e
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Which of the following statements is true regarding fungi? Select all correct choices
A. Many fungi demonstrate both asexual and sexual cycles. B. Fungi are heterotrophs. C. Fungi are autotrophs. D. Fungi only reproduce asexually (e.g., via budding). E. Fungi serve as decomposers.
Halogen-containing organic compounds persist in the environment for approximately five years
a. True b. False Indicate whether the statement is true or false
Ovulation is indicated by
a. A. b. B. c. C. d. D. e. E.
What evidence was used by scientists to deduce the climate conditions that existed thousands of years ago?
A) plant remains trapped in sediments B) fossilized fruits and seeds C) DNA in crop plants D) deep layers in soils