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mixas84 [53]
3 years ago
13

The fusing of egg and sperm forms a

Biology
2 answers:
Lapatulllka [165]3 years ago
6 0

Answer:

zygot

Explanation:

Ad libitum [116K]3 years ago
4 0

Answer:

it forms a zygote

Explanation:

fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes form a new organism.

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Which of the statements regarding the cell cycle is true? Group of answer choices It is regulated by cyclins and CDKs. Different
MA_775_DIABLO [31]

Answer:

All of these choices are correct.

Explanation:

Cell cycle is the process of growth and division of cell. It comprises of interphase and mitosis. In interphase the cell grows, replicates its genomic content and prepares itself for division. In mitosis the division occurs.

Cell cycle is controlled by a group of kinases called as Cyclin dependent Kinases (CDKs). They act by phosphorylating their substrates. They are of various types like Cdk1, Cdk2, Cdk4 etc. They become active when they bind to a regulatory protein called cyclin. They are also of various types like Cyclin A, Cyclin B, Cyclin C etc. Level of cyclin and corresponding CDK increases and decreases according to the stage of cell cycle. For example in S phase of cell cycle concentration of cyclin A and E shoots up. CDK2 is able to bind to these cyclin molecules and hence it becomes active.

Cell cycle has major checkpoints where the condition of cell is analysed before it proceeds to the next stage of cycle. If any abnormality is detected, repair mechanism is activated or the cell is killed. Checkpoints do not allow cell cycle to proceed in damaged cells.

p53 is a tumor suppressor protein which can halt cell cycle when it detects some abnormality in cell. It usually acts in G1/S checkpoint (before the DNA replication starts in cell) and G2/M checkpoint (before the cell division begins). Hence, all of the above statements are true.

7 0
3 years ago
According to this article, what did Professor Con Slobodchikoff discover about prairie dogs and the noises they make?
nadya68 [22]
Like all animals the noises they make are to warn off predators, and mating call. IDk
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What is the start codon and its importance to the reading frame?
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3 years ago
Huntington's disease (hd) is a neurodegenerative genetic disorder involving an autosomal dominant mutant allele with high penetr
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100% the child will also have HD, as HD is caused by the DOMINANT mutant allele. 4/4

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Why is important for scientists to use scientific names and not common names?
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It is important for scientists to use scientific names and not common names because common names can be easily misunderstood as something else. For example, a scientist during an expeirement will use scientific names because if they used a common name of a certain thing and it be mistaken for something that it wasn't the entire expeirement would be ruined or someone could get hurt.
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