Pedigree charts use shaded symbols to show organisms that have a particular trait, such as a defective gene, being traced in the
chart. A breeder wants to make a pedigree chart of male horses to avoid breeding males that have a defective gene. What symbol would the horse breeder use to show a male who is affected by a defective gene? A. shaded circle
B. shaded square
C. unshaded circle
D. unshaded square
The correct answer among all the other choices is B. shaded square. This symbol would the horse breeder use to show a male who is affected by a defective gene. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
In pedigree analysis, squares represent the males while circles represent the female individuals. Since the horse breeder wants to show the male horse who is affected by the target gene, he should represent it with a shaded square. A shaded square in pedigree represents the affected males. Unshaded squares would represent the unaffected normal males.
The major difference between viruses and living things are that most living things can reproduce independently, whereas viruses must infect living cells in order to reproduce. The correct answer is C.
Archaea are the closest modern relatives of Earth's first living cells
Archaea are famous because of living in extreme environments
If it’s super hot (more than 100° Celsius), freezing, acidic, alkaline, salty, deep in the ocean, even bombarded by gamma or UV radiation, there’s probably life there, and that life is probably archaeal species
They’re also considered very resourceful
Many forms of archaea can utilize totally inorganic forms of matter—hydrogen, carbon dioxide or ammonia for example—to generate organic matter themselves
