Correctly order the following key steps in the process of endochondral ossification. a) chondrocytes die. b) osteoblasts build the bone collar on the external surface of the bone. c) perichondrium is invaded by blood vessels. in the primary ossification center, osteoblasts replace calcified cartilage with early spongy bone. d) perichondrial cells differentiate into osteogenic cells then into osteoblasts.
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Biology, 22.06.2019 04:00
Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. albino x albino a) 1/4 chinchilla, 3/4, agouti b) 3/4 albino, 1/4 chinchilla c) all albino
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Biology, 22.06.2019 05:30
Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?
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Biology, 22.06.2019 06:00
Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?
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Biology, 22.06.2019 15:40
During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.
Answers: 1
Correctly order the following key steps in the process of endochondral ossification. a) chondrocytes...
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