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ICE Princess25 [194]
3 years ago
6

20. Why, for sexual reproduction, it is extremely important that the two gametes only have

Biology
1 answer:
Bad White [126]3 years ago
4 0
I'm not completely sure, but I'd say D.
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In a dihybrid cross of two heterozygous individuals, you expect a 9:3:3:1 phenotypic ratio in the offspring, but observe a ratio
almond37 [142]

Answer:

e. Epistatic interaction of the two genes

Explanation:

The 9:7 ratio is typical of the Duplicate Recessive Epistasis.

The expected phenotypic ratiio of the offsrping of a dihybrid cross is:

9 A_B_

3 A_bb

3 aaB_

1 aabb

In the Duplicate Recessive Epistasis, the A_bb, aaB_ and aabb individuals all have the same phenotype, making for the ratio 9:7. What those three genotypes have in common is that in all of them at least one of the two genes  is homozygous recessive (either <em>aa</em> or <em>bb</em>).

This usually happens one the products of genes A and B are enzymes of the same metabolic pathway.

Whenever both A and B are present, the pathway can produce the final product and a certain phenotype. However, if any of the dominant alleles is missing, the enzyme is not produced and therefore the final product of pathway is not produced, giving the other phenotype.

3 0
3 years ago
Do you think the biodiversity is as high in a city park as it is in a rainforest?why or why not?
geniusboy [140]

No, the biodiversity is not as high in a city park as it is in a farm or rainforest

because, in an urban city park, only the species with the most general habitat and resource requirements have generally remained in the urban park.

<h3>What is Biodiversity ?</h3>

“Biodiversity” not only refers to the number of individual species, but also the genetic variety within and between species and the diversity of ecosystems and regions.

  • City Parks are less likely to have biodiversity richness as compared to a farm or a rainforest.

  • This is because these parts are artificially created and a lot of naturally occurring flora and fauna are modified in the process. This results in dilution of biodiversity-rich place.

Learn more about Biodiversity here:

brainly.com/question/26110061

#SPJ4

8 0
2 years ago
In the chemical equation for photosynthesis, carbon dioxide and water are converted to glucose and oxygen
lara31 [8.8K]

Explanation:

because c how JavaScript help guidev. your house he hasn't gotten help gettingg

5 0
3 years ago
The GLUT transporter moves glucose through a transport protein in the same direction as its concentration gradient. The action o
Lubov Fominskaja [6]

Answer:

The correct answer is - facilitated transport and secondary active transport.

Explanation:

GLUT transporter is a glucose transporter that helps in moving the glucose to its concentration gradient through the cell membrane. It is a transport protein that uses passive transport of facilitated transport that moves down their concentration gradient and therefore does not require chemical energy from ATP hydrolysis in the transport step.

Sodium-based GLUT or SGLT is also a glucose transport protein that exhibits secondary active transport as it develops electrochemical potential difference by moving ions out of the cell membrane, this gradient allows the movement of ions and molecules.

4 0
3 years ago
What type of organisms first move into an area after a primary disturbance?
kirza4 [7]
In the scenario,in which the type of organism that can first move into another area after a primary disturbance then would be C. organisms who do not reproduce often. Hope this is the answer and would be of great help them.
6 0
4 years ago
Read 2 more answers
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