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iris [78.8K]
3 years ago
12

To perform a testcross, scientists cross an organism with an unknown genotype with a _____ organism.

Biology
2 answers:
ivolga24 [154]3 years ago
8 0

The correct answer is homozygous recessive


-BARSIC- [3]3 years ago
5 0
To perform a testcross, scientists cross an organism with an unknown genotype with a homozygous recessive organism.

Hope this helped xx
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Select the correct answer. Which statement about natural selection is true? A. Natural selection and evolution are two terms for
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Answer:

C. Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.

Explanation:

Natural selection is an evolutional process by which species of living organisms with stronger or more beneficial traits have higher chances of survival and reproduction. In other words, it is the process by which organisms adapt and survive.

Organisms in a population are all different in their own ways. And those with characteristics or traits better suited for the environment are more likely to survive than those without. The selection prefers more beneficial traits and not wholly on the superiority of the organism. So, the survival and reproduction chance of an organism depends on the presence of traits beneficial to the environment, which is how nature selects. And in this process, those selected will dominate the population while those rejected will be reduced or even die.

Thus, the correct answer is option C.

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Why is death by predators more natural or right then death by starvation?
balu736 [363]
Predators have to eat. If things are good in an eco-system then the prey is eating good which means the predators can eat good also. Starvation means that things in the eco-system are going bad. Also, It helps the earth maintain its balance. If too much of any aspect of the system is removed it throws the whole thing off balance. too many herbivores will eat too much vegetation.
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Which of these activities increases the amount of carbon in the atmosphere?
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Answer:

B.

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4 0
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A recessive gene located on the X chromosome is the cause of one type of colorblindness (denoted by Xc). Let the genotype for no
Alex73 [517]

The scenario will be Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son

<h3>What is color blindness?</h3>

The condition is frequently inherited. Certain eye diseases and medications are also possible causes. Men are more affected than women.

Color blindness is characterized by the inability to distinguish between red and green shades.

A colorblind man's genotype is XcY, and a heterozygous carrier female's genotype is XcX. A cross between XcY and XcX would result in progeny with the following ratio=

Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son.

Thus, the couple is likely to have a son who is half normal and half affected. Similarly, the couple is likely to have 50% normal daughters and 50% colorblind daughters.

For more details regarding color blindness, visit:

brainly.com/question/25621649

#SPJ1

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2 years ago
What weather factor is also a measurement of energy held within the air?
Alex Ar [27]
The answer is B - pressure
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