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Alex
3 years ago
5

When a portion of the sample does not respond to the survey?

Biology
1 answer:
guajiro [1.7K]3 years ago
3 0
The controlled of guessed 
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In a certain plant, tall stems (t) are dominant to short stems (t). a farmer crosses a short-stemmed plant with a heterozygous l
melisa1 [442]

The answers would be:

Genotype                Phenotype

     Tt                      Tall stemmed

     tt                       Short stemmed

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

Genotype        no.         Phenotype

     Tt                 2           Tall stemmed

     tt                  2           Short stemmed

So from that we can answer the other questions:

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

8 0
3 years ago
What happens to carbohydrates during cellular respiration?
yKpoI14uk [10]
In cellular respiration, the cells take the carbohydrates in and through complex metabolic processes, they break them down and release the energy. 
7 0
3 years ago
Which if the following statements best describes the first thing researchers need to manipulate dna
Diano4ka-milaya [45]
<span>"Restriction enzymes would be used to cut the DNA into smaller pieces." is the statements best describes the first thing researchers need to manipulate dna. Before manipulation it is needed to isolate the desired DNA segment. Restriction enzyme can be also called as restriction endonuclease.</span>
6 0
3 years ago
A _______ is a segment of a DNA molecule which codes for a specific protein, while a __________ is a long molecule of DNA wrappe
PtichkaEL [24]
The answer:
gene
nucleosome
8 0
3 years ago
Read 2 more answers
Do your results imply that the uptake of water by radish seeds is mainly a physical process or a chemical (metabolic) process?
umka2103 [35]

Answer:

physical process

Explanation:

Assuming that there are no latency mechanisms that prevent germination, several factors are required for the embryo contained in the seed to restart its development.

Water Absorption

Embibition: It is a special case of a <u>physical phenomenon</u> called diffusion, and as such, there is a diffusion gradient. It is characterized by an increase in volume of the substance or body that embeds and is closely related to the properties of colloidal materials. The colloidal particles in the seed form a moderately rigid miscelar network, in which electric charges of opposite signs are oriented in a defined manner. When water penetrates the seed, one fraction occupies the free spaces and another chemically joins the substances of which the seeds are composed. The volume of the seeds increases with the embibition, but the final volume of the system (seed + water) is smaller than the sum of the initial individual volumes of seeds and water; This contraction of the system is proof of the occupation of the free spaces within the seed and the absorption of water in the colloidal matrix.

The embibition rate is affected by several factors that can determine the germination response of the seeds.

6 0
3 years ago
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