Answer:
The phenotype ratio predicted for dihybrid cross is 9:3:3:1.
Explanation:
A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance *. This means that both parents have recessive alleles, but exhibit the dominant phenotype. (Sorry if i Misspelled some words)
Ok... so pretty much you need to use the words they gave you and find the relation between them and connect them using the chart given in the textbook. I tried explaining my best. hope I helped
Answer:
a. The letters Na with one dot
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valency can be defined as a measure of the combining power of a chemical element with other atoms to form a molecule or chemical compound.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Thus, valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Sodium is a chemical element that is found in group (1) of the periodic table and as such it has 1 electrons in its outermost shell. Also, the chemical symbol for Sodium is Na and it has one (1) valence electron.
A Lewis structure can be defined as a structural representation of an atom or molecule by using a dot to show the position and distribution of electron(s) around the atom or molecule.
Hence, the letters Na with one (1) dot is a correct Lewis structure diagram for Sodium (Na) because it has just one (1) valence electron in outermost shell.
For example, the Lewis structure diagram for Sodium (Na) is •Na.
Answer:
The correct answer is option E. a flavivirus.
Explanation:
A flavivirus is a virus that is found in primarily by mosquitoes and tick or other arthropods. These are the virus that contains single-stranded enveloped RNA. These mosquitoes or ticks can infect humans with these flaviviruses. These viruses cause diseases that are characterized by high fever, rashes.
The epidemic can cause life-threatening diseases such as dengue, yellow fever, tick-borne encephalitis.
Thus, the correct answer is option E. a flavivirus.
During meiosis 1, prophase 1 Each chromosome form tetrads and and become more and more condensed. This is when crossing over occurs. So your answer is B.
