It adjust the concentration of the urine to reflect the body's water needs, conserving water if the body is dehydrated or making urine more dilute to expel excess water when necessary. ADH is a hormone that helps the body to retain water by increasing water reabsorption by the kidneys.
C. bb because the white allele is recessive
Answer:
B. The random movement of pollen granules suspended in water.
Explanation:
Brownian motion is the irregular movement of particles suspended in a liquid or a gas, and it is usually caused when there is a bombardment of the particles by the molecules in the liquid or gas.
The Brownian motion who was named after Robert Brown, first experimented the random movement of pollen grains in water; therefore the movement of pollen grains or granules suspended in water.
Hot and Dry
Hot and dry deserts, such as the Sonoran Desert
of Arizona and northwestern Mexico, are warm year-round with an extreme
range of diurnal (daily) temperatures because of low humidity. Brief but
heavy storms may occur seasonally. Soil is hard and rocky. Burrowing
mammals, insects and reptiles are the main fauna. The Great Sandy Desert
of Australia and the Sahara of north Africa fall under this category.
Semi-Arid
Semi-arid
deserts, such as the Great Basin of Nevada and western Utah, have long
dry summers plus winter rainfall. Dew fall may exceed rainfall. Soil is
sandy and rocky, and may include “caliche” (pans of calcium carbonate).
Fauna is consistent with hot and dry deserts.
Answer:
(A) A transversion base substitution causing a missense mutation
(B) A transition base substitution causing a silent mutation
(C) A transversion base substitution causing a silent mutation
Explanation:
There are two types of base substitutions, transversions and transitions. A transition is when the a purine base is substituted with another purine base or a pyrimidine base is substituted with a pyrimidine base (e.g. Purines - A to G; G to A; Pyrimidines - C to T; T to C). A transversion occurs when a purine base is substituted with a pyrimidine base or a pyrimidine base is substituted with a purine base (e.g. A to T; C to A).
There are three main types of mutations, these are missense mutations, nonsense mutations and silent mutations. Missense mutations occur when a base is changed and the codon now codes for a different amino acid to before the mutation. Nonsense mutations occur when a base is changed and now the codon codes for a stop codon causing a premature stop of the translation process. Silent mutations occur when a base is changed but the new codon still codes for the same amino acid as before the mutation.