Answer:
Incomplete dominance
Explanation:
Incomplete dominance is a type of inheritance pattern in which two alleles of a gene are not dominant over one another but rather form an intermediate phenotype, which is a blending of both parental phenotypes. It is a non-mendelian inheritance i.e. does not conform to Mendel's inheritance principles.
An example of incomplete dominance is that of the alleles of a flower color gene in four o'clock plant. The alleles for white (W) and red (R) are incompletely dominant over one another, hence, they form an intermediate PINK phenotype (RW).
The scrotum is the sensitive part of a male body.
Birds are an example of an animal that migrates, birds migrate south when it gets cold so they can be in warm weather.
Answer:
A lot of factors cause genetic variation in a population. The root of all genetic variation is mutations, which occur randomly.
A lot of genetic variation in fact results during meiosis, the process by which gametes (sex/reproductive cells) are formed. The 3 main ways are crossing over, independent assortment of chromosomes, and random fertilization. Crossing over occurs during Prophase I of meiosis, in which genetic material is exchanged between nonsister chromatids of homologous chromosomes. Independent assortment refers to the following: When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. Random fertilization is where any sperm can fertilize any egg cell. The many combinations of eggs and sperms mean variation.
Another source of genetic variation include gene flow. Gene flow is where populations have their members enter other populations (migration), influencing the gene pool of populations. This source is more controversial, however.
Random mating can also increase genetic variation.
The protons have to stay the same
