Answer: A transposable element is introduced into the regulatory region of the eye color gene and causes gene expression to be reduced, which results in white eyes with red spots
It would be 3 (HH and Hh) to 1 (hh).
Answer:
Physical characteristics: Freshwater sponges are crustlike, branched, or clumped. The texture is fragile and soft, and the color is whitish or green. Freshwater sponges have irregularly scattered and barely visible water-exit holes.
Geographic range: Freshwater sponges live in North America, Europe, and Asia.
Habitat: Freshwater sponges live in standing and running fresh water.
Diet: Freshwater sponges are filter feeders.
Behavior and reproduction: Scientists know little about how freshwater sponges behave. These sponges reproduce asexually by forming buds in late summer that spend the winter in a dormant state and emerge from the adult in the spring. Freshwater sponges reproduce sexually during the summer, giving birth to live larvae.
Explanation:
<span>Atlantic cod was the mainstay of fisheries based in southeast Canada and New England.for centuries
However, in the early 1990s, a dramatic decline in cod stocks forced fishery managers to close
some of the world's most productive fishing grounds..The case study of the Atlantic Cod as an
illustration of major issues in the management of marine fisheries.The bottom trawl increased landings but
unlike earlier methods, captured many non-target species and disturbed or destroyed bottom habitats. In May of 2003, the Canadian fisheries ministry ordered an end to all Atlantic cod
fishing in three regions off the Newfoundland and Labrador coast In the same year fishing in three regions off the Newfoundland and Labrador coast. In the same year,Newfoundland and Labrador Atlantic cod populations were declared “endangered.”.The establishment of a “200-mile fishing limit”.had been demanded by the domestic fishing industry for years to reduce the
impact of foreign fishing vessels on fish stocks. Recently, it has been suspected that increased herring populations may be inhibiting recovery of cod.  Atlantic herring populations increased after the decline of Atlantic cod in the early 1990s  Herring feed on cod eggs and larvae and therefore, the community may be stuck in a herringâ€dominated system. Earlier attempts to end over fishing and implement
ecosystem-based fishery management have fallen short of the hopes of mostfisheries managers and scientists.</span>
