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Dvinal [7]
3 years ago
9

Which is best illustrated by Watson and Crick's ball-and-stick model of DNA?

Biology
1 answer:
Rasek [7]3 years ago
3 0
I think you forgot to give the options along with the question. I am answering the question based on my research and knowledge. "The role of creativity in scientific discovery" best <span>illustrated by Watson and Crick's ball-and-stick model of DNA. I hope that this is the answer that has actually come to your help.</span>
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Write a word or phrase beginning with each letter of change
frozen [14]

Correction

Haphazardly

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6 0
4 years ago
Which term describes the form of a gene that produces a specific trait such as eye color
andrey2020 [161]

1. In the late 1800s, Mendel predicted the existence of units of hereditary information or factors. What do we call these units of hereditary information today?  

chromosomes or genes im not sure  

2. Which term describes the form of a gene that produces a specific trait, such as eye color?  

allele  

3. Which term describes a type of trait that is usually expressed only when an organism has two identical alleles for the trait?  

homozygous  

8. Refer to the following information to answer Questions 8 and 9.  

A certain species of grasshopper can have red stripes, yellow stripes, or red and yellow stripes. An RR grasshopper has red stripes, an YY grasshopper has yellow stripes, and an RY grasshopper has red and yellow stripes.  

Which type of inheritance is this an example of?  

codominance  

9. A grasshopper with red stripes mates with a grasshopper with yellow stripes. What ratio would you expect to see in the phenotypes of their offspring?  

all with yellow and red stripes  

10. Which of the following best describes the relationship between a gene and an allele?  

An allele is a variant of a gene.  

11. Which of the following is the best physical description of a gene?  

A gene consists of all of the DNA on a chromosome.  

12. Suppose you cross a true-breeding blue flower with a true-breeding yellow flower. In the next generation, all of the flowers are blue. What does this outcome tell you about the allele for blue flowers?  

The blue allele is dominant to the yellow allele.

mark brailiest please

5 0
3 years ago
In eukaryotes, there are two main types of DNA organization present in chromosomes:
kupik [55]

Answer:

The two main types of DNA organization present in chromosomes are the extended DNI and the condensed DNI

Explanation:

In eukaryotes, the complete chromosome is composed of only one lineal and extremely long DNA molecule. DNA is intimately associated with two types of proteins: <u><em>histones</em></u>, which are structural proteins, and <em>non-histone</em> proteins that mediate different functions of DNA.

DNA associated with histones is called <u><em>chromatin</em></u>. Histones are responsible for packaging DNA molecule, and the fundamental unit of packaging is known as a <em><u>nucleosome</u></em>. As chromatin must be condensed, nucleosomes generate regular structures between themselves forming a <em><u>chromatinic fiber</u></em>, in which DNA is very condensed. A superior level of condensation is the structural <em><u>ringlet-shaped domain</u></em>. At this level, a chromatinic fiber is folded and a protein is responsible for keeping joined the two regions of DNA that form the ringlet. The next condensation level is the rolling of the ringlet-shaped domain composing the <u><em>chromosome</em></u>. The typical chromosome in the metaphase is formed by <u><em>two chromatids</em></u> joined by a centromere. Each chromatid is composed of a sequence of chromatin ringlets domains. In the interphase, <em>before cellular division</em>, chromatin is in a diffuse, lax, uncondensed state, known as extended DNA. When <em>cellular division</em> is about to happen, chromatin begins to condensate. At the beginning of the <em>prophase</em>, DNA is condensed in a well-defined chromosome formed by two sisters chromatids.

3 0
4 years ago
What is another name for the shell on a bivalve?
ella [17]
Cell wall ..........
5 0
3 years ago
Question 2 (Worth 2 points) When a substance goes from a gas to a liquid, it goes through a ________ change. chemical phase bond
sesenic [268]
It goes through a physical change. 
7 0
3 years ago
Read 2 more answers
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