The outer layers of a red giant keep expanding until they eventually drift off and form a ______ _____

As part of their normal function, many proteins bind to DNA briefly and then release it again. Which types of interactions might

Harman [31]

Answer:

Non-covalent interactions.

Explanation:

DNA is present as genetic material in all the living organism except some viruses. DNA also perform important other functions - code for proteins, used as a source of energy.

The DA binds with protein to perform their functions. These proteins may acts as activator for DNA. The proteins binds in the non covalent interactions ( ionic bonding, hydrogen bonding, vanderwalls and hydrophobic interaction) so that proteins may easily detach from the proteins. These interactions helps in the attachment and easily detachment of proteins from DNA.

Thus, the correct answer is non-covalent interaction.

8 0

1 year ago

A geneticist crossed pure breeding black mice with pure breeding brown mice. All the 992 mice in F1 generation had black coats.

MaRussiya [10]

Answer:

The statements that apply are the third and the fourth.

Explanation:

Since the mice crossed were pure breeding, each parent produced sperms of one kind, both alleles of each parente were equal. Thus, the first (A) and second (B) statements are false.

Assume pure breeding black mice produced BB sperm and pure breeding brown mice produced bb sperm.

The punnett square for the first generation, F₁ is would be:

b b

B Bb Bb

This is, all the F₁ generation mice are Bb.

All the 992 in F₁ generation had black coats means black is dominant.

Now when F₁ generation is crossed, the punnet square reveals the second generation, F₂:

B b

B BB Bb

b bB bb

The brown allele that was hidden now appears.

Based on the assumption that black is dominant, BB, Bb and bB are black, which is 3/4 or 75%. This, is 75% of the mice in the F₂ genrertion are black.

The combination bb is brown. Thus, 1/4 or 25% of the mice in the F₂ generation are brown.

When the mice in the first generation were crossed, they yielded 961 black coated mice and 317 brown coated mice. That is:

Total mice: 961 + 317 = 1278

Proportion of black mice: 961 / 1278 ≈ 0.75 = 3/4

Proportion of brown mice: 317 / 1278 ≈ 0.25 = 1/4

Ratio black to brown: 3 to 1.

Therefore, it is proven that an approximately three-to-one ratio of black to brown cated mice in F₂ is accounted fro the black allele being dominant over the brown allele (choice C.)

Also, the brown allele is not independent from the black allele and dissapears in the F₁ generation: it is not independent because it presence will only be shown when the black allele is not present, and it is said that it dissapears because it is not revealed, it is hidden.

8 0

1 year ago

Some members of david's family have an autosomal recessive disease. david does not have the disease; neither do his parents, nor

Sauron [17]

A pedigree shows the genotypes of the family members
in autosomal recessive disorders, the diseased genes are inherited from the parents. For the person to get the disease both diseased genes should be there in the genotype as its a recessive disorder.
the dominant gene - H
recessive gene - h
for a person to get a disease, genotype should be hh, as its autosomal recessive. If the person is normal he/ she could have the genotype HH or could be Hh and thats called a carrier.
the offspring will receive one gene from the mother and one from the father

8 0

2 years ago

A constant used in an equation for gravity is 0.0000000000667. What is theis represented as a number in proper scientific notati

xxTIMURxx [149]

The correct answer is - C) 667 x 10-13.

The constant that is used in the equation for gravity, or rather gravitational pull, is 0.0000000000667. This same number, in proper scientific notation goes in the shape of 667 x 10-13.

The reason for that is very simple. Any number multiplied with 10-13 will give the exact same number, but as the last part of 13 decimal number. The -13 part dictates the number of decimals. So in the case of 0.0000000000667, the last part 667 is the number that is multiplied, but because the multiplying is in minus, the number goes on the back of the number. Since it has three numbers in it, ten zeros are added in front of it, in order to get the 13 decimals.

7 0

2 years ago

Which statement best describes the relationship of photosynthesis and energy? The process of photosynthesis is energy-storing be

11111nata11111 [884]

The process of photosynthesis is energy-storing because the process converts light energy into chemical energy, which is stored in the bonds of glucose.

5 0

2 years ago

Read 2 more answers

The outer layers of a red giant keep expanding until they eventually drift off and form a ______ ______.

The outer layers of a red giant keep expanding until they eventually drift off and form a .