Answer:
''Genetic variation occurs from changes in homologous chromosomes during meiosis''.
Explanation:
''Genetic variation occurs from changes in homologous chromosomes''. Genetic variation occurs from a number of techniques such as mutation, random mating, random fertilization, and recombination between homologous chromosomes during the process of meiosis. meiosis is a type of cell division which occurs in the sex cells of the organisms which is responsible for the variation in the body of organisms.
There are common elements for humans genetic codes, so, in a sense, they have exactly the same type of units defining it, yet the combination of thrm can determine, among others, the phisical characteristics of a person
Answer:
By performing a test cross i.e. a cross with a recessive trait
Explanation:
According to the question, hairlessness is a recessive trait, meaning that it will only be expressed in a homozygous condition i.e. when there are two recessive alleles in the genotype. Presence of hair is dominant, meaning that it will mask the phenotypic expression of hairlessness allele in a heterozygous state. Hence, a dominant phenotype can either be homozygous (same dominant allele) or heterozygous (combination of dominant and recessive alleles).
In order to determine which of these genotypes the dominant phenotype possess, we perform a test cross. A test cross is a cross performed to determine the genotype of the dominant organism by crossing it with a homozygous recessive genotype.
Ideally, the offsprings resulting from the cross will all be phenotypically dominant if the organism in question is homozygous dominant but if the organism is heterozygous dominant, the offsprings will occur in an equal ratio of dominant to recessive phenotypes.
So in this case, all of offsprings of this cross between the rat terriers will possess hair if the dominant rat terrier dog is homozygous, but if the dominant rat terrier dog is heterozygous, an hairless offspring will be produced.
D. Biology. In forensics, they use DNA-related evidence, and DNA relates to biology.
If you're talking about excel then you would select the cell with the label you want and click "Format Painter". Then, you click and drag it down the first 10 and it will automatically apply that same label to all the cells.
