<span>The circulatory, immune, skeletal, excretory, muscular, endocrine, digestive, nervous and respiratory. those are the eight systems of the human body.</span>
Answer
Only one type of amino acid could be coded for such synthetic mRNA, becacuse it contain only one type of codon.
- A.<u> higher, lower</u><u> </u>
- B. <u>2</u><u> </u><u>to</u><u> </u><u>1</u>
2.
No movement of water would have
occurred if they were isotonic.
3.
- A. <u>Side</u><u> </u><u>2</u>
- B. <u>Side</u><u> </u><u>1</u>
Answer:
The F1 progeny is completely heterozygous for the <em>loci</em> of interest since they were obtained by mating between two pure-breeding plant lines. In the next generation, the backcross progeny will have homo-zygous individuals and therefore they will be more variable, resulting from meiosis in F1 hybrids
Explanation:
An F1 resulting from the cross between two pure-breeding plant lines will produce all hybrid individuals, all of them genetically (and phenotypically) identical. Meiosis in F1 hybrids is well known to produce homo-zygous genotypes and thus increases genetic diversity in progeny. For instance, for a single <em>locus</em>, the expected ratio of genotypes obtained from crossing two heterozygous parents is 1:2:1, i.e., one homo-zigous dominant individual, two heterozygous individuals (genetically identical to the parents) and one homo-zygous recessive individual; while the expected phenotypic ratio is 3:1 (i.e., 3 dominant expressing: 1 recessive expressing).
