Is there a question for this
In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. If there is no variation, then all individuals have the same chance to survive and nothing will be particularly selected.
Answer:
In the dominant- recessive model of inheritance, the dominant allele fully suppresses the recessive allele. As a result, heterozygous individuals produced show the effect of the dominant trait in them. For the recessive trait to occur, both the alleles of the gene should be recessive in the organism.
In co- dominance model of inheritance, the dominant allele is not fully dominant over the recessive trait. As a result, heterozygous individuals show both the dominant and recessive characteristic in them. For a dominant trait to occur, both the alleles should be dominant. For a recessive trait to occur, both the alleles should be recessive.
b. macrophages
Macrophage cell use acid to kill bacteria and fight infection in the human body but it can also replicate the bacteria so it kills itself off. So duplicates beforehand and attacks the bacteria before it spreads.
Begin by listing all of the abiotic and biotic factors you will use. Examples include soil, a living space (such as a glass tank), plants, air, water, sunlight, and possibly earthworms. Have your child classify each factor as abiotic or biotic.
