A karyotype could detect all the following conditions except _____.
A) color blindness
B) Down syndrome
C) Turner's syndrome
D) Klinefelter syndrome
Ans: A) color blindness
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Describe at least 3 adaptations of deep-sea fishes for improving feeding efficiency
What will be an ideal response?
Which of the following characteristics distinguishes birds from reptiles?
a. Reptiles have only one single middle ear bone, while birds have two or more. b. The shape of their occipital condyles allows birds to rotate their heads more than reptiles can. c. Birds are endothermic. d. Birds and reptiles have distinctly different jaw bone morphologies.
Place the five steps in building a phylogenetic tree in the proper order, from first construction step to last.1. The nucleotide or amino acid sequence must be aligned.2. The alignment must be examined for a phylogenetic signal.3. Choose which tree-building method to use (common ones are phenetic or cladistic).4. Application of a selected method, using computer analysis.5. Manual examination of the tree.
Fill in the blank(s) with the appropriate word(s).
Offspring with four phenotypes in a 1:1:1:1 ratio can be produced by
A. AaBb ´ AaBb. B. AABB ´ AaBb. C. AaBa ´ AABb. D. AaBb ´ aabb.