Common recessive alleles present in a family can result in a pedigree that looks like ____ inheritance
a. X-linked recessive
b. X-linked dominant
c. autosomal dominant
d. autosomal recessive
e. Y-linked
c
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Imperfect conditions in flowers refer to which of the following?
A. how the flower shape looks B. whether there are missing parts such as petals C. where the flower grows D. how often the flower blooms E. whether sexual parts are missing
The term for small invertebrates adapted to living in the spaces between sediment particles is: a. merofauna
b. macrofauna. c. microfauna. d. meiofauna.
In the late 1980s and early 1990s, the percentage of Icelandic children whose bacterial infections were caused by bacteria resistant to penicillin rose at an alarming rate
After public health officials initiated a campaign to reduce the use of penicillin, resistance dropped off. (See the accompanying figure.) This observation is consistent with the hypothesis that ________. A) bacteria generate mutations so that they can evolve in order to become better adapted to their environment B) the use of antibiotics generates mutations in bacteria that affects their resistance C) antibiotics really have no effect on bacterial resistance; such fluctuations are natural and occur whether we use antibiotics or not D) bacterial populations evolve in response to the selection pressure imposed by antibiotics
Distribution of daughter chromosomes derived from sister chromatids during meiosis II then leads to a total of ______ new cells, each with the haploid number of chromosomes.
Fill in the blank(s) with the appropriate word(s).