The fetus get's it's nourishment from the placenta.
Answer:
first one B second one A
Explanation:
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Alkanes are linear, or branching, compounds that are made of varying numbers of carbon atoms that are all saturated with hydrogen atoms. The formula for an alkane is CnH(2n+2). This means that the number of hydrogen atoms equals twice the number of carbon atoms, plus two. Methane is the simplest hydrocarbon possible.
Genetic variation results in different forms, or alleles?, of genes. For example, if we look at eye colour, people with blue eyes have one allele of the gene for eye colour, whereas people with brown eyes will have a different allele of the gene
In your question that ask to find out or to select which of the following among your choices does and individual with a Turner Syndrome and we all know that this is one of the disease that has a chromosomal descripancies and the answer is B. 2n-1
