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Sveta_85 [38]
3 years ago
9

Which statement about identical twins is TRUE?

Biology
2 answers:
zheka24 [161]3 years ago
7 0

Answer:

A. They have identical DNA in all of their cells.

Explanation:

Identical twins are also known as monozygotic twins. They result from the fertilization of a single egg that splits in two. Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy.

QveST [7]3 years ago
7 0

Answer:

A. They have identical DNA in all of their cells.

Explanation:

All of the cells in your body share the same DNA as was found in that first cell.

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List the changes that occur in the zygote after fertilization that contribute to human development
Katena32 [7]

Answer:

Hello! Sorry i am late! Here is my best answer below.

Fertilization happens when a sperm cell successfully <u>meets an egg cell in the fallopian tube.</u> Once fertilization takes place, this newly fertilized cell is called a <u>zygote.</u> From here, the zygote will move <u>down the fallopian tube</u> and <u>into the uterus</u>. The zygote then <u>burrows</u> into the <u>uterus lining</u>.

Explanation:

Sorry if this is not what you were looking for! Hope this helps you! Have a great rest of your day or night and good luck on your work!

<3 <3 <3

7 0
3 years ago
(03.05 hc) the base pairs in a dna strand are held together with hydrogen bonds. if the two nitrogenous bases in each pair were
asambeis [7]

The cell would have to take in and use more energy in order to break the covalent bonds.

The correct option is B

Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.

One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

brainly.com/question/26466656

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7 0
2 years ago
Can a codon contain two of the same nucleotide bases?
omeli [17]

Answer:

Answer is Below

Explanation:

According to resourcegate.net, A codon consisting of a single base could only code for 4 amino acids, a length of two bases for 16 (4x4), and of three bases for 64 (4x4x4). Given that tRNAs have to interact via their anticodons with the mRNA, we have an upper limit for the codon length.

Hopes this helps :D

Mark me branliest Please

3 0
2 years ago
Read 2 more answers
What challenges do you think parasites face in their survival? How can these challenges affect the parasite?
Greeley [361]
Parasites need a host. If a host tries to get rid of the parasite or kill it, then the parasite either has to leave the body or die.
7 0
3 years ago
A blizzard can form when certain physical factors combine with the presence of moisture in the atmosphere. Which two factors com
SIZIF [17.4K]

Answer:

A blizzard can form when warm air combines with a high pressure system.

Explanation:

A high pressure zone is defined by cold air mass that has higher density than surrounding air mass. Therefore when a warm air current blows towards the high pressure system, the warm air mass rises over the cold air mass of the high pressure system.

The warm air begins to cool at the front between the  cold air mass and warm air mass. Usually for a blizzard to occur the cold air mass is usually below freezing point temperatures. Therefore the moisture in the warm air cools and freezes into snowflakes. This is why the winds of a blizzard are accompanied by snowflakes akin to a winter storm.

Lean More:

For more on blizzards check out;

brainly.com/question/2852460

brainly.com/question/11961252

#LearnWithBrainly

3 0
4 years ago
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