Question

The table below shows experimental data from poultry scientists. Examine the table to answer the following questions.
Oviposition time, egg weight, chicken hatch weight and hatch weight/egg weight from young and mid-age broiler breeder flocks.
Flock age Oviposition time (h) n Egg weight (g) Chicken hatch weight (g) Chicken hatch weight/ egg weight (%)
Young Early 168 59.30.2a 38.80.2a 65.4

Middle 168 58.20.3b 37.80.3b 65.0

Late 168 58.70.1b 38.10.2b 64.9

Total 504 58.90.1 38.30.1 65.0

Mid Early 252 66.80.2a 45.80.2a 68.6

Middle 252 65.50.2b 44.00.3b 67.2

Late 252 66.00.2b 43.20.2c 65.5

Total 756 66.10.1 44.10.1 66.7

If the egg was weighed halfway between being laid and hatching, how would you expect that weight to compare to the weight of the newly hatched chick?
A) The egg would weigh more at this midpoint than when newly hatched because, during development, the chick gains new parts.
B) The egg would weigh more at this midpoint than when newly hatched because it is taking in oxygen.
C) The egg would weigh less at this midpoint than when newly hatched because the shell wears away over time.
D) The egg would weigh less at this midpoint than when newly hatched because some of the mass of the egg would be released through cell respiration.

Answer

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