Mutation of the B group gene in Arabidopsis
thaliana affects development in its flower’s
a. first whorl only.
b. second whorl only.
c. third whorl only.
d. first and second whorls.
e. second and third whorls.
Answer: e
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A homologous chromosome pair is best described as two chromosomes that have _______
A. the same genes in the same order but possibly with different alleles of some of the genes B. the same alleles of the same genes in the same order C. the same genes possibly arranged in a different order with potentially different alleles of some of the genes D. different alleles of the same genes arranged in a different order E. identical sequences of nucleotides
Define aneuploidy and describe the sex chromosome aneuploidies involved in Turner syndrome, Klinefelter syndrome, and XYY syndrome; list characteristics of each disorder
What will be an ideal response?
A common consequence of nutrient deficiencies in plants is chlorosis, which is
a. wilting due to a lack of chlorine in leaves. b. death of the growing tips. c. premature loss of leaves. d. bursting of cells from excess water uptake due to an inability to clear chlorine from them. e. yellowing of plant tissues due to a lack of chlorophyll.
How can nutrition of the mother during pregnancy affect the risk of the offspring later being susceptible to obesity and cancer?
What will be an ideal response?