1/5
1/4
1/3
1/2
Correct answer is D
No explanation has been provided for this answer.
have normal vision
be colour-blind
be totally blind
be a carrier of colour blindness
Correct answer is D
The boy is a carrier because Xn is the recessive allele for colour blindness.
In a population of living things, the parameters of size, height, weight, and colour are examples of
discontinuous variation
continuous variation
physiological variation
non-heritable variation
Correct answer is B
No explanation has been provided for this answer.
feed the animals in the herd with more food
cross-breed his animals with a different herd
inbreed the animals in the herd
prevent disease in the herd
Correct answer is C
No explanation has been provided for this answer.
Tissue respiration is important for the
absorption of oxygen into the alveoli
release of carbon (IV) oxide into the lungs
release of energy for the body use
exhalation of carbon(IV) oxide from the lungs
Correct answer is C
No explanation has been provided for this answer.