It moves through rocks, water, soil and sediments I think hope this helps
(a) The alleles of white feathers and that of single-head combs are dominant while that of the dark feathers and small combs are recessive.
(b) 1/16 or 6.25%
<h3>Dihybrid crossing</h3>
Since all the offspring resemble their mother, it means the alleles that make up the traits of the mother are dominant over that of the father.
Assuming that:
Feathers color = F/f
Comb type = C/c
Genotype of mother = FFCC
Genotype of father = ffcc
FFCC x ffcc
FfCc
Crossing: FfCc x FfCc
Progeny
F_C_ = 9/16
ffC_ = 3/16
F_cc = 3/16
ffcc = 1/16
More on dihybrid crosses can be found here: brainly.com/question/1185199
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The answer is C. The first option is highly unlikely, the second option is impossible, and C is a much more likely answer than D.
C mitochondria and chlorplaste
Yellowfin tuna can be considered to be in the secondary consumer trophic level. The first trophic level, called producers, are the organisms that can make their own food. The second level, called primary consumers, are herbivores who consume producers. The next level, called secondary consumers, consume herbivores. Since yellowfin tuna eats herbivorous fish, the former is a secondary consumer.