The phyla Bryozoa and Brachiopoda have which feature in common?
A. nephridia
B. a lophophore
C. a radula
D. setae
E. a muscular foot
B. a lophophore
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Which of the following is the best example of how we can separate the effects of genes and the environment on the expression of a complex trait?
A. About 80% of an individual's height is determined by genes and 20% by environment. B. For identical twins raised in the same environment, height should not differ by more than 20%. C. In a group of individuals of the same sex, about 80% of the variation in height among individuals is due to genetic differences and 20% is due to environmental differences. D. If one individual is 60 inches tall and another is 70 inches tall, they differ in about 80% of their genes. E. None of these choices accurately illustrate how we can separate the effects of genes and the environment on the expression of a complex trait.
The spread of cancer cells from one site to others in the body is known as _____
a. cleavage b. metastasis c. benign transfer d. neoplastic movement
e. mutational slippageDescribe the basic approach to shotgun genome sequencing
What will be an ideal response?
We often refer to the host of genetic factors in the genome that have an influence on a particular gene's expression as its genetic background. What influence does genetic background have over the phenotype of the organism?
What will be an ideal response?