Who put forth the idea of evolution driven by natural selection?.

1 answer:

7 0

The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century

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What is the biggest challenge to the successful use of pig organs in human transplants?

iragen [17]

The biggest challenge is rejection. Sometimes the human body will not accept the pig organ unfortunately.

Hope this helped. Good luck !

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3 years ago

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A Pea plant that is homozygous for inflated pods are heterozygous for round seeds is crossed with a plant that is heterozygous f

Norma-Jean [14]

The answer is False!

P - dominant allele for inflated pods
p - recessive allele for inflated pods
PP - homozygote with inflated pods
Pp - heterozygote with inflated pods
pp - homozygote with inflated pods

S - dominant allele for round seeds
s - recessive allele for wrinkled seeds
SS - homozygote with round seeds
Ss - heterozygote with round seeds
ss - homozygote with wrinkled seeds

1. A Pea plant that is homozygous for inflated pods are heterozygous for round seeds: PPSs
2. A plant that is heterozygous for inflated pods and a homozygous for wrinkled seeds: Ppss

Let's look at their genotypes separately, and cross them that way:

Parents: PP x Pp
Offspring: PP PP Pp Pp
All of the offspring will have the same phenotype (100% = 1). So, this trait does not affect phenotypic ratio

Parents: Ss x ss
Offspring: Ss Ss ss ss
Half of the offspring will have wrinkled seeds and half of them will have round seeds: 50% : 50% = 1 : 1

So, the phenotypic ratio is not 1 : 3

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3 years ago

Whitch of the following statements are true?

maria [59]

Answer:

All the statements are true except the second i. e. the soil quality in an ecosystem Does not matter as much as soil quantity.

Explanation:

In an ecosystem both quality and quantity of water is very important. If the quality of water is not suitable, that it contains polluted substances so the health of the organism such as fishes and other aquatic animals will adversely affected and sometimes dealth occurs and the ecosystem will be negatively affected.

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3 years ago

What phase of mitosis is pictured below?

Dmitrij [34]

Answer:

Its a Anaphase

because the chromatids of each chromosomes have separated and are moving towards the poles

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Different type of cells within an organism ____________.

Paha777 [63]

B. Serve a different function I think