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
The process in which the environment<span> selects </span>organisms<span> that will survive is called natural selection. It starts with overproduction; when an </span>organism<span> produces more offpsrings than can survive. The second is variation. Because there are so many offsprings, there will be variations.</span>
Answer: A would be the correct answer. Making observations would include scientists exploring the world around them
Explanation:
<em>Full Question:</em>
<em>Which tissue is correctly paired with its primary cell type?</em>
<em>bone: fibrocyte</em>
<em>bone: osteoblast</em>
<em>connective tissue proper: chondroblast</em>
<em>cartilage: fibroblast</em>
Explanation:
<em> </em><u><em>bone: osteoblast</em></u>
<u><em></em></u>
<u><em></em></u>
Osteoids comprise, significant sections of the entire bone matrix, and this includes fibers of collagen which give bone its flexibility and mechanical strength this allows born to resist stretching and twisting forces.
Osteoblasts are highly specialized cells within bone which formulate new bone through the production or secretion of parts of the organic matrix; this is referred to as the osteoid and mediate the calcification (fortification with allium) of osteoid during the formation of mature bone matrix.
Learn more about bone growth and development at brainly.com/question/6957100
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Answer:
A
Explanation:
I hope this helps. Sorry if i'm wrong.
