Answer: There will be one homozygous straight wing, two heterozygous straight wings, and one homozygous curly wing.
Explanation: A true breeding pair means that both parents are heterozygous (Ww). Set up a Punnett square with two Ww parents. The offspring will be 1 WW (homozygous straight), 2 Ww (heterozygous straight), and 1 ww (homozygous curly).
Every species exhibits variations based on various genes being activated at various times. An example with humans can be eye color or hair color. What species means is that all members of a species can procreate with healthy, capable of procreating progeny, but anything else is just a variation.
Scientists have yet to prove that the current global warming trend is not part of the natural cycle of Earth. Many things are being done now, mostly focusing on emission controls placed upon industry and transportation.
Answer:
Omnivores is a great answer
This statement is not true of cilia in the respiratory tract: THEY CLOSE THE WIND PIPE OPENING WHEN SWALLOWING.
Respiratory cilia are hair like structures that are find in the respiratory tract. Their major function is filtration of air for removal of contaminants. They are also capable of removing foreign objects such as smoke, dust and inhaled particles such as pollen from the respiratory system. Another functions perform by the cilia is the movement of mucus away from the lungs into the throat thus helping to protect the lungs from infection.
The closing of wind pipe when swallowing is not part of the functions of the cilia, that role is performed by the epiglottis.
