Biology, 10.04.2020 21:35, damientran
Many individuals of the platyfish, Xiphophorus maculatus, have spots on their dorsal fins. A closely related species, the swordtail, X. helleri, lacks spots. In some backcross hybrids of these species, enlarged spots develop into malignant tumors, which reduce the organisms' life spans. This could be an example of .a. the Dobzhansky-Muller model of speciation.
b. beneficial hybridization.
c. the morphological species concept.
d. gene flow.
e. genetic compatibility.
Answers: 3
Biology, 21.06.2019 18:30, ChaseRussell24
Scientific method and data analysisa biology student wanted to determine if there is a relationship between resting heart rate and bodyheight. she gathered information from 12 classmates and constructed the table below. resting heart rate (beats per minute)student height (cm)155. 156156165180180190194195
Answers: 1
Biology, 22.06.2019 03:30, tpenn2476
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Biology, 22.06.2019 11:00, sailormaries7101
This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.
Answers: 2
Many individuals of the platyfish, Xiphophorus maculatus, have spots on their dorsal fins. A closely...
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