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Kay [80]
3 years ago
5

11. Selecting specific traits to create a new breed of an animal would be an

Chemistry
1 answer:
Lynna [10]3 years ago
7 0

Selective breeding

The Alleles

DNA

X and Y chromosome from mother and father

Nucleus

Gene

<u>Explanation:</u>

  • In selective breeding, a specific trait of the animal is considered and the gene coding for that trait is used to create new breeds. Example - cow producing lot of milk.
  • Genotypes are always expressed by the alleles.
  • Example - Genotype of Tall plants would be TT or Tt
  • Information is passed from parents to offsprings from the information stored in DNA.
  • A gender of an individual is determined by the x chromosomes of mother and X and Y chromosome of father.
  • X chromosome from mother and X chromosome from father would form a female and X chromosome from mother and Y chromosome from father would form a male.
  • DNA is located inside the nucleus of the cell
  • Gene is the segment of chromosome that codes for a specific protein. The non coding segment of chromososme is heterochromatin.

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A block of has a length of 7cm, a width of 4cm, and a height of 10cm. Its mass measures 840g. What is it's density?
andriy [413]

Answer:

Explanation:

Density is

mass / volume = d

Mass:

840g

Volume:

7 cm x 4 cm  x 10 cm = 280 cm^3

840g / 280 cm^3 = 3 g/cm^3

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3 years ago
Interpreting Velocity vs. Time Graphs
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Answer:first part is A and C, second part is C, third part is 40 m/s and the fourth part is zero

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Identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the nu
Alja [10]

Answer:

(a) [Noble gas] ns² np⁵: Number of unpaired electron is 1 and belongs to group 17 i.e. halogen group of the periodic table.

(b) [noble gas] ns² (n-1)d²: Number of unpaired electron is 2 and belongs to group 4 of the periodic table.

(c) [noble gas] ns² (n-1)d¹⁰ np¹: Number of unpaired electron is 1 and belongs to group 13 of the periodic table.

(d)[noble gas] ns² (n-2)f⁶ : Number of unpaired electron is 6 and belongs to group 8 of the periodic table.

Explanation:

In the Periodic table, the chemical elements are arranged in 7 rows, called periods and 18 columns, called groups. They are organized in increasing order of atomic numbers.

(a) [Noble gas] ns² np⁵

As the total number of electrons in the p-orbital is 5. Therefore, the number of unpaired electron is 1.

This element has 2 electrons in ns orbital and 5 electrons in np orbital. <u>So there are 7 valence electrons.</u>

Therefore, this element belongs to the group 17 i.e. halogen group of the periodic table.

(b) [noble gas] ns² (n-1)d²

As the total number of electrons in the d-orbital is 2. Therefore, the number of unpaired electrons is 2.

This element has 2 electrons in ns orbital and 2 electrons in (n-1)d orbital. So there are <u>4 valence electrons.</u>

Therefore, this element belongs to the group 4 of the periodic table.

(c) [noble gas] ns² (n-1)d¹⁰ np¹

As the total number of electrons in the p-orbital is 1. Therefore, the number of unpaired electron is 1.

This element has 2 electrons in ns orbital and 1 electron in np orbital. So there are <u>3 valence electrons</u>.

Therefore, this element belongs to the group 13 of the periodic table.

(d)[noble gas] ns² (n-2)f⁶

As the total number of electrons in the f-orbital is 6. Therefore, the number of unpaired electron is 6.

This element has 2 electrons in ns orbital and 6 electrons in (n-2)f orbital. So there are <u>8 valence electrons.</u>

Therefore, this element belongs to the group 8 of the periodic table.

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VashaNatasha [74]
What do you mean by this question?
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Please help me with this homework
KengaRu [80]

Answer:

The answer is C density.

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