A) they are the control group
Answer:
<em>The option that is false is A) There are 80 bones in the appendicular skeleton.</em>
Explanation:
Option A is false because the appendicular skeleton comprises of 126 bones instead of 80. However, it is the axial skeleton which comprises of 80 bones. Together, the bones of the appendicular skeleton and the axial skeleton make up 206 bones. The main function of the appendicular skeleton is to help the body in locomotion. The appendicular skeleton forms from the cartilage during a process termed as endochondral ossification.
The evolution is explained by principles of the natural selection is as follows:
1. Resources are scarce
2. There is a biological variation within all species.
3. There are more born that the available resources, hence competition.
4. Adaptation to the environment will likely aid survival
5. Environment will decide which is deemed fit
6. Those who are considered fit will have offspring, and those who arent will die out.
7. As time goes on, those with more successful adaptation will develop more mutation, later becoming a new specie.
When applied to the theory of evolution, our primate ancestors have developed mutation that were deemed more fit, thus creating a separate species that evolved to human beings.
i think it answer A.... i'm not sure
Answer:
C. Aa and aa
Explanation:
The question tell us that shaded symbols represent individuals who express a dominant trait (or phenotype). This means that symbols that are not shaded represent individuals who express a recessive trait (or phenotype).
A dominant allele (A in this case) will always mask a recessive allele (a in this case) when present and be shown in the organism's phenotype. Therefore genotypes AA and Aa, which both contain the dominant allele A, will both result in dominant phenotypes, while the genotype aa will result in a recessive one due to the absence of a dominant A allele.
Looking at the pedigree chart we can see that individual 1 has a dominant phenotype, and individual 2, a recessive phenotype. Since the only way for an organism to have a recessive phenotype is to only have recessive alleles, organism 2 must have genotype aa. Similarly organism 1 must have at least one dominant A allele, therefore C is the correct answer.
Hope this helped!