RESPOND THOUGHTFULLY TO THIS DISCUSSION POST. RESPOND TO PERSON’S ANSWER The Question:

What does it mean to be an extremophile? Describe one extremophile condition and explain how it would relate to the environment that a prokaryote is growing within. How might it alter their growth cycle/curve?

The Person's

Extremophiles are any organism living in any ecological condition outside the normal growth condition which is determined by nutrition and niche-specific physical parameters like temperature and pH. An environment with extremely high temperatures can be considered an extremophile condition, the growth curve for prokaryotes living in the environment is different. For E. g. Picrophilus torridus is a thermoacidophile adapted to acidic and hot conditions.

Psychrophiles: ~0°C–20°C
Mesophiles: ~15°C–45°C
Thermophiles: ~40°C–80°C
Hyperthermophiles: ~65°C–121°C

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.