Answer: one offspring out of the four will have a recessive-recessive genotype.
Explanation: A cross between two parents who are heterozygous for a gene that has a simple dominant-recessive pattern of inheritance will produce four offsprings: one will be homozygous dominant, two will be heterozygous dominant while one will be homozygous recessive.
Homozygous dominant offspring has two dominant alleles, heterozygous dominant offspring has one dominant allele and one recessive allele while a homozygous recessive offspring has two recessive alleles.
For example, a cross between two parents that are heterozygous (Tt) for tall will produce one TT, two Tt and one tt. TT is homozygous dominant, Tt is heterozygous dominant and tt is homozygous recessive. An offspring with genotype tt has a two recessive alleles thus have a recessive-recessive genotype. Therefore the number of offsprings with recessive-recessive genotype is one.
See the attached punnet square for more information
The answer is 3
Explanation:
Answer:
are
Explanation:
In a heterogenous mixture, it is easy to tell the different pieces and parts from each other. For example, cereal with fruit added to it, or trail mix made of peanuts, raisins and candy. You can easily see the parts of the mixture. A homogenous mixture is one in which you can't see the parts easily, like ketchup or the air we breathe.
D) hibernating until conditions improve
Squirrels place their food in the ground or in trees and then hibernate during the winter. So when they wake up, there will be plenty of food.<span />
The correct option is WATER DIVERSION PROJECTS.
The Aral sea in Russia, was one of the world largest lake, but since 1960 it has been reducing in size because most of its water is been diverted to farm lands for crops growth. The mono lake was almost wipe out as a result of its diversion for California water project.<span />