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emmasim [6.3K]
2 years ago
6

What does atomic number tell you about an atom? * Number of electrons in the nucleus Number of protons and neutrons in the nucle

us Number of protons in the nucleus Number of electrons in the electron cloud around the nucleus *NEED ANSWER QUICKLY*
Biology
2 answers:
Ainat [17]2 years ago
7 0

Answer:

Number of protons in the nucleus

Explanation:

Morgarella [4.7K]2 years ago
6 0

Answer:

Number of protons in the nucleus

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Chromatin of eukaryotes is organized into repeating interactions with protein octomers called nucleosomes. Nucleosomes are compo
Katyanochek1 [597]

Nucleosomes are composed of "histones" class of molecules.

<u>Explanation:</u>

Histones usually presented in eukaryotic nuclei of cells which seemed as strong level of proteins that bundle and organize DNA into structural groups called nucleosomes in biological science.

They are chromatin's chief protein elements, functioning as spools along which DNA spins, and playing a major role in regulating genes. Five forms of histones have been recognized:

  • H1 (or H5), H2A, H2B, H3, and H4;
  • H2A, H2B, H3, and H4 are the main histones and H1 and H5 are the linker histones.
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3 years ago
If a parent cell has 20 chromosomes, how many chromosomes will each daughter cell have at the end of the cell cycle
shtirl [24]

Answer: After mitosis, the daughter cell has 20 chromosomes and after meiosis, the daughter cell has 10 chromosomes.

Explanation:

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2 years ago
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2 years ago
What is the SI unit for intensity
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Watt

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3 years ago
To check whether Earnest and Denise could have a baby with Type O blood, draw a Punnett square for a father who has blood Type A
Nutka1998 [239]

Answer:

Answer is explained below and also see the document attached below for Punnett square.

Explanation:

ABO blood type (A, B, AB, or O) is based on the presence (or absence) of the A and B antigens in the red blood cells. The blood type, A has only the A antigen (and has anti-B antibodies) while the blood type, B has only the B antigen (and had anti-A antibodies). Also in the AB  blood type, both A and B antigens are present (but has no antibodies) while in the O blood type, both A and B antigens are absent (but has both antibodies).

The blood type is inherited from the parents and the offspring inherits one of the two alleles from each parent. The ABO blood type has three types of alleles: IA, IB, and i. Here, I is a term for antigen (isoagglutinogen).

The IA and IB alleles are dominant while the i allele is recessive. The blood type A is formed by either two IA alleles (IA IA ) or IA i. So, the genotype of blood type A is IA IA  or IA i. The blood type B is formed by either two IB alleles (IB IB ) or IB i. So, the genotype of blood type B is IB IB or IB i. The O blood type is formed only by two i alleles (ii). So, the genotype of blood type O is ii. The IA and IB alleles (IA IB) give the AB blood type, which is an example of codominance (the traits of both the alleles are visible in the phenotype). The genotype of blood type AB is IA IB.  

If the parents have blood type A and B, then they can have an AB blood type offspring. If the parents have blood type A and B and they both are heterozygous (IB i and IA i), then they can also have a O blood type child.

Here, the father has blood Type A (IA i genotype) while the mother has blood Type B (IB i genotype). Both the parents are heterozygous (IB i and IAi), so the possible genotypes of their child are IA IB (blood type AB), IA i (blood type A), IB i (blood type B) and ii (blood type O).

i.e.,            <u> Blood Type </u>                             <u>Genotype </u>

                           A                                     IA IA or IA i

                           B                                     IB IB or IB i

                          AB                                        IA IB

                           O                                            ii      

Download doc
3 0
3 years ago
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