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3 years ago

Potassium (K) and copper (Cu) are both in period 4. They both have _____.

Biology

1 answer:

Virty [35]3 years ago

5 0

Answer:A): four electron shells

Explanation:

In the period table, atoms are arranged in rows called periods and columns called groups. The arrangement of atoms in groups is based on the number of their valence electrons while the arrangement of atoms across the periods is based on their number of electrons shells. Atoms are arranged across the periods in increasing order of their atomic number i.e., according to their number of electrons. Potassium has 19 electrons while copper has 29 electrons. Both has four electrons shells according to their electronic configuration.

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What are the four elements<br> that all graphs must have?

ss7ja [257]

Answer:

x axis, y axis,

Explanation:

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3 years ago

Read 2 more answers

The genes R, E and D are independently assorting and control production of red pigment as follows (recessive alleles are not fun

Alona [7]

Answer:

1/8

Explanation:

An individual must have all three dominant alleles to be red, in homozygosis or heterozygosis (R_E_D_).

<u>The parental cross was:</u>

RREEDD x rreedd

F1: RrEeDd

<u>The test cross</u> is between the RrEeDd indiviudals and homozygous recessive rreedd.

The genes assort independently, so we can use Mendel's law of segregation to predict separately for each gene the proportion of the offspring that will have the dominant alleles.

1/2 Rr

1/2 rr

1/2 Ee

1/2 ee

1/2 Dd

1/2 dd

Genes are independent, so the probability of having a R_E_D_ offpsring is calculated by multiplying the individual probabilities of having a dominant allele for each gene:

1/2 (Rr) × 1/2 (Ee) × 1/2 (Dd)= 1/8

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3 years ago

A segmented viral genome

Fynjy0 [20]

<h2>The correct option is (C)</h2>

Explanation:

A VIRUS consist of RNA or DNA Genes and are therfore known as RNA Virus or DNA Virus

RNA genomes is seen in majority of Viruses. Bacteriophages possess double stranded DNA genomes whereas Plant viruses possess single stranded RNA genomes
Viral genomes are linear, as we see in the adenoviruses and circular as we see in the polyomaviruses
The shape of the genome is not determined by the type of nucleic acid present in it.
The genome is often divided into separate parts, in RNA and DNA viruses, and thus we called as segmented.

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2 years ago

Which of the following is an example of gene flow?

kykrilka [37]

<span>When the genes propagate from one area to another.
The founder effect happens when genetic diversity declines due to an external larger group of organism invades a set of current living population. An example of this process is when the British colonies invaded the Mesoamerican continent where native americans lived and were outrun by the British colones, especially since many wars were made and ethnic cleansing. </span>

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2 years ago

Which two body systems were most actively involved in this experiment?

DIA [1.3K]

Your going to need show us the experiment, sense all of those are functions there is no question or details for us to answer your question

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3 years ago