They have short wings enabling them to fly with a lot of speed and
maneuverability
Increase in air pollution: public transport
decrease in trees: plant new trees
loss of bird habitat: nesting boxes
endangered aquatic species: regulate recreational activities
Answer:
c. Affected fathers have all affected daughters, but no affected sons.
Explanation:
Given that the disease is caused by a dominant allele on X chromosome, an affected father would have a disease allele in the X chromosome that passes along to the male gamete, while the gametes containing a Y chromosome would not have it (since it is X-linked).
During sexual reproduction, the father passes an X chromosome to its daughters (the second X chromosome being contributed by the mother) but an Y chromosome to its sons (the single X chromosome being contributed by the mother).
Indeed, within an affected father's offspring, all his daughters will receive the affected X chromosome from him, while his sons will receive an unaffected Y chromosome (since the disease is X-linked). These males will not inherit the disease, for they will receive an unaffected X chromosome from her mother (which is expected to be healthy since the disease is rare).
Because it helps them with finding new researches.
A)Appendix D)tailbone and C)wisdom teeth are vestigial structures that have no important function
