Endoskeleton is the internal support of the structure of an organism. an exoskeleton is the external support
Answer :a. the polygenic nature of sickle-cell disease
Explanation:
<u>SS is a genetic disorder in which more than two genes control a single character</u>. Contrary to single gene to a trait. It exhibit an abnormal clinical heterogeneous traits for Mendel inheritance with multiple factors exerting influence on an individual disease outcome. Therefore multiple complications arises with symptoms
Oxygenated blood is pumped from the left ventricle
Answer:
d. incomplete dominance
Explanation:
When none of the alleles of a particular locus completely masks the expression of the other allele of the same gene, it is called incomplete dominance. If the allele B gives "blue" phenotype and allele b gives white phenotype, a cross between blue (BB) and white (bb) parents would produce all the progeny with genotype Bb. Since the allele B does not completely prevent the expression of allele b in the heterozygous condition, the phenotype of the F1 hybrids would be "light blue". Therefore, it is an example of incomplete dominance.
blue (BB) x blue (BB) = all blue (BB)
white (bb) x white (bb)= all white (bb)
blue (BB) x white (bb)= all light blue (Bb)
Reactants? The chemicals needed to start a chemical reaction.