Answer:
225 flies
Explanation:
Let gene for body colour : A
Let gene for eye type : B
Parent 1 : normal body and normal eyes = AABB
Parent 2: ebony body and eyeless = aabb
F1 : AABB X aabb = AaBb ( all have normal body and normal eye )
F1 progeny is self crossed given that the two genes are on different chromosomes which means they show independent assortment:
AaBb X AaBb =
A_B_ = normal body, normal eyes = 9
aaB_ = ebony body, normal eyes = 3
A_bb = normal body, eyeless = 3
aabb = ebony body, eyeless = 1
Hence the ratio is 9 : 3 : 3 : 1
Out of the 400 flies:
(9/16) * 400 = 225 flies have normal body colour and normal eyes
Answer: DESERT
Explanation:
Adaptation can be defined as the modification in the form, structure, function and behaviour of organisms in a habitat which enables them to live successfully and reproduce.
Desert is one of the types of the world biomes that is characterized with little or no rain and to extreme temperatures. Organisms, which includes plants and animals, must show some level of adaptation to able to survive the harsh environment.
The type of PLANTS which can survive in desert environment are called the XEROPHYTES. They show the following adaptations:
--> The roots are well developed: they grow down to great depths and branch extensively in order to absorb water
--> they possess swollen stems which contains water storage cells.
--> they have reduced leaves, for example in cacti in the form of spines, which helps to reduce water loss through transpiration.
The type of animal that survive in desert environment spend the hot dry seasons in a sleep-like torpid state called aestivation. This is so in order to avoid the heat. Their body size is usually small and less bulky: greater surface area in relation to body volume, thus enhancing heat loss from the body.
Organisms that live in the _________ must be adapted to little or no rain and to extreme temperatures.
The cell can grow large but not the organisms. Once the cell is growing the organisms grow smaller. I think hope it correct
