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Setler79 [48]
3 years ago
6

What determines the genotype of an organism

Biology
1 answer:
marishachu [46]3 years ago
6 0
The answer is DNA because genotype is the genes of an organism and genes = DNA.
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How do I adjust my model based off of fossil information?
Sindrei [870]

Answer:

Fossil is unable to change

Explanation:

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Rocks is biotic or abiotic?<br> Soul is biotic or abiotic ?<br> Sea shells is biotic or abiotic?
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Rocks are abiotic
(Soil?) is made of both abiotic and biotic materials
Sea shells are biotic
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Which of the earth's systems makes up all the living organisms found on earth?
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It's the lithosphere
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In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The gene
NikAS [45]

Answer:

A) 9:3:3:1

B) All bitter fruit, yellow spotted offsprings

C) Phenotypes are bitter yellow spotted (4), bitter no spot (4), sweet yellow spot (4), and sweet no spot (4). 1:1:1:1

Explanation:

This is a typical dihybrid cross involving two genes, one coding for fruit taste and the other for spot color. The allele for bitter taste (B) and yellow spot (S) is dominant over the allele for sweet taste (b) and no spot (s) respectively.

Hence, a heterozygous F1 resulting from a cross between an homozygous dominant (bitter fruit, yellow spot) and homozygous recessive (sweet fruit, no spot) will have a BbSs genotype. The heterozygous F1 offsprings are self-crossed and produce gametes BS, Bs, bS, bs. (See punnet square). The F2 offsprings will have the following phenotypes: Bitter fruit, yellow spot (9)

Bitter fruit, no spot (3)

Sweet fruit, yellow spot (3)

Sweet fruit, no spot (1)

Back cross between a F1 offspring (BbSs) and homozygous dominant parent (BBSS) will produce all bitter fruit, yellow spot offsprings (see attached image). BBSS (4), BBSs (4), BbSS (4), and BbSs (4) are the offsprings' genotypes.

For the back cross between a F1 offspring (BbSs) and a homozygous recessive (bbss) parent, the Phenotypes with their proportions are as follows:

Bitter fruit, yellow spot (BbSs, 4)

Bitter fruit, no spot (Bbss, 4)

Sweet fruit, yellow spot (bbSs, 4)

Sweet fruit, no spot (bbss, 4).

4 0
3 years ago
What term describes a plant's response to external stimuli like light, gravity, and touch?
Svetradugi [14.3K]

According to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

<h3>What is a tropism?</h3>

It is the response that plants or certain organs of them make to a stimulus that comes from the outside.

There are different classes of tropisms according to the nature of the stimulus, gravitropism, phototropism, heliotropism among others.

Therefore, we can conclude that according to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

Learn more about a tropism here: brainly.com/question/9267510

#SPJ1

8 0
1 year ago
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