? I don’t get it?? Picture?
An element have the same number of protons as electrons.
Therefore: if an element x (Lawrencium) has 103 protons, it has 103 electrons.
Two stages that occur in the carbon cycle are: Animal respiration and emissions from factories
Animal respiration is carbon dioxide and water that is released into the atmosphere .
carbon emissions can be absorbed by plants and trees during photosynthesis to produce food.
2. Solar power is a sustainable way to gather energy as it does not harm the atmosphere and carbon emissions. However,sunlight may not always be available in winter months due to shorter days and longer nights. solar panels can also be very expensive to set up, but costs can be broken even over a period of years.
Nuclear power can be a cheap way to produce electricity as deposits of uranium and plutonium will last for the next couple of thousands of years (3000-4000 years). power plants can cost colossal amounts to set up but have relatively low running costs. please like and thank me that was a lot to write
Answer:
Phenotypic ratio 1:1:1:1
Explanation:
A test cross is a cross between an individual with heterozygous genotype and a homozygous recessive individual, in order to ascertain the actual genotype of the dominant parent i.e whether homozygous or heterozygous.
In this case, which is a dihybrid cross involving two genes A and B. The allele A is dominant over allele a, since it masks the expression in a heterozygous state. The same applies for allele B and b.
Therefore, allele A and B are dominant alleles while allele a and b are recessive alleles.
In a cross between an heterozygous parent (AaBb) and a homozygous recessive (aabb), each individual will undergo meiosis and produce gametes. According to Mendel's law of independent assortment, the alleles of each individual get sorted into gametes independent of one another.
The four possible gametes produced by each parent are:
AaBb: AB, Ab, aB, ab
aabb: ab, ab, ab, ab
Thus, using a punnet square (see attached image), the possible 16 progenies will possess four different genotypes: AaBb (4), Aabb (4), aaBb(4), aabb(4)
Considering the four distinct genotypes, the phenotypes will also differ. Hence, the phenotypic ratio: 4:4:4:4 ~ 1:1:1:1