The population of pepper moths that were adapted to the pollution would be spotted by birds and die but the population that did not adapt would survive because they are a lighter color and can blend in with the trees.
<u>Cross the </u><u>green-pod plant</u><u> with a yellow-pod plant. </u>Because the homozygous recessive plant tests for the presence of any recessive alleles in the unknown genotype.
The cross between an unknown genotype plant and a known homozygous recessive plant is referred to as a test cross. Because each offspring of a recessive homozygote will inherit one allele for the recessive trait, the phenotype of the offspring will depend on the second allele.
The genotypes, allele combinations, and observable qualities of children from genetic crosses may be predicted using a Punnett square. Mendel examined the genetics of pea plants and determined how traits like flower color, blossom position, seed color, and seed shape are passed down through the generations.
According to Mendel's theory, parents impart "heritable factors"—what we now refer to as genes to their children, which in turn determines their qualities. A particular gene, such as the Y gene below, which determines seed color, has two copies in every individual. If these copies correspond to various alleles, or versions, of the gene, the dominant allele may conceal the recessive allele. The dominant yellow allele Y conceals the recessive green allele Y in seeds.
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All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
Chromosomes that they give you.
<span>increases numbers quickly and go over the carrying compassity
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