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viktelen [127]
3 years ago
13

FIRST TO ANSWER GETS MARKED BRAINLIEST!!! WORTH 20 PTS!!!

Biology
1 answer:
sladkih [1.3K]3 years ago
3 0

Answer:

Explanation:

A duplicated chromosome is made up of two identical chromatids which are also called sister chromatids. The relationship between them is: two chromatids contained in the duplicated chromosome are held together at a region of DNA called the centromere.

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Tallness ( T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition resu
Tju [1.3M]

Answer:

All the offspring have genotype RrTt

Phenotype is Pink and tall snapdragon

Explanation:

Given

Tallness ( T) is dominant to dwarfness (t)

Red (R) flower color is dominant to white (r)

It is given that heterozygous condition results in pink (Rr) flower color which means that the allels for color of flower show co dominance

Genotype of dwarf red snapdragon is RRtt

Genotype of a plant homozygous for tallness and white flowers is rrTT

The punnet square representing the cross between RRtt and rrTT is as given below-

Rt     Rt         Rt     Rt

rT RrTt      RrTt RrTt    RrTt

rT RrTt      RrTt RrTt    RrTt

rT RrTt      RrTt RrTt    RrTt

rT RrTt      RrTt RrTt    RrTt  

Thus all the offspring have genotype RrTt

Phenotype is Pink and tall snapdragon

5 0
3 years ago
What is the purpose of the coronary artery and what results if there is blockage in this vessel ? cousrse hero?
tresset_1 [31]
Coronary arteries supply blood to the heart muscle, The left one, arises from the aorta and feeds blood to the left side of the heart and the right one supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm. Blockage in this vessel result in <span>reducing the flow of oxygen and nutrients to the heart muscle and that can lead to a heart attack. Atherosclerosis and arteriosclerosis are the most common causes of heart disease.</span>
7 0
3 years ago
SOMEONE PLEASE HELP ME??
s2008m [1.1K]
Oh man i remember learning about this but i cant remember what the answer is i will see what I can do :D
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Which type of anatomic structure are bird wing and butterfly wing when com pared to each other
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Analogous structure.
7 0
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What are the functions of micronucleus and macronucleus in paramecium?
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The macronucleus is the larger elipse-shaped nucleus and takes care of functions like respiration and digestion. In contrast to this, the smaller micronucleus is only involved in cell division or reproduction.
4 0
3 years ago
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