Answer:
F1) 100% wild type, Pr Vg / pr vg
-----Pr--------Vg------
-----pr---------vg------
Explanation:
<u>Available data</u>:
- Two genes located on the same chromosome
- red eyes (Pr _) are dominant to purple eyes (prpr)
- normal wings (Vg _) are dominant to vestigial wings (vgvg)
Cross: A pure breeding red-eyed fly and vestigial wings with a pure-breeding purple-eyed fly and normal wings
Parentals) Pr vg / Pr vg x pr Vg / pr Vg
Gametes) ----Pr-------vg---- ----pr-------Vg----
----Pr-------vg---- ----pr--------Vg----
F1) 100% wild type, Pr Vg / pr vg
-----Pr--------Vg------
-----pr---------vg------
Only known planet to have oceans of liquid water is Earth.
Answer:
1) A, C and D
2) D
Explanation:
The normal hemoglobin is made up of heme and globin. The protein, globin is in turn made up of four polypeptide chains which include two alpha and two beta chains.
The gene gene responsible for the creation of the beta globin chain is located on the short arm of chromosome eleven. It is called the HBB gene. Many mutations occur on the HBB gene and a mutation on this gene produces abnormal hemoglobin like HBS, hbc, and hbe. HBs causes sickle cell anemia.
In sickle cell anemia, there is an alteration of the genetic code, leading to the substitution of a single amino acid where glutamic acid is replaced by valine in the sixth position of the beta chain.
In the mRNA, the change converts a glutamic acid codon(GAG or GAA) to a valine codon(GUA, GUC, GUU or GUG).
Sickle cell anemia is caused by a transversion that leads to a missense mutation.
To safeguard against ground water contamination, sanitary landfills are lined with plastic and clay. Ground water is the water beneath Earth's surface in soil pore spaces and in the fractures of rock formations.Water that falls as precipitation flows along the surface of the ground. This surface water infiltrates into the ground surface and is held in soil pore spaces and in the fractures of rock formations. To gain access to this water sources it requires digging or drilling the ground and into an aquifer.