Biology, 27.11.2019 14:31 bthakkar25
Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 million years old. dna fingerprinting and comparison with today’s living cockroaches revealed that modern cockroaches have certain additional genes which allow them to survive in today’s colder climate. which of these could be the correct explanation for this discovery?
a. change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches.
b. somatic modification in ancient cockroaches led to the evolution of modern cockroaches.
c. modification of all the genes of ancient cockroaches led to the evolution of modern cockroaches.
Answers: 1
Biology, 21.06.2019 16:40
Hemoglobin is the compound in red blood cells that carries oxygen to the body. the distribution of hemoglobin in women in g/dl of blood is approximately normally distributed with mean 14 and standard deviation 1. too little hemoglobin, and you're anemic. 2. too much, and (unless you live at high altitudes), you can have other problems.
Answers: 3
Biology, 22.06.2019 09:40
Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.
Answers: 1
Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 mil...
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