Estuaries in which river flow is strong and prevents the flow of seawater upstream are called:
a. fjords.
b. salt-wedge estuaries.
c. well-mixed estuaries.
d. tectonic estuaries.
e. drowned river valleys.
B
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Changes in the number of copies of chromosomal DNA segments and the genes they contain are called
____________________.Fill in the blank(s) with the appropriate word(s).
Provide a brief description of discontinuous inheritance and continuous inheritance. How are the two related? How are they different?
What will be an ideal response?
____ is the predominant photosynthetic product carried in phloem
a. Glucose b. Cellulose c. Sucrose d. Maltose e. Fructose
Hamilton explained the origin of altruism in selected insect societies with his kin selection model of sex determination. Since males are haploid and females are diploid, the workers share a very high proportion of alleles, theoretically as high as 75%. What is this called?
A. haplodiploidy B. altruism C. haploidy D. diploidy E. parthenogenesis