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musickatia [10]
3 years ago
14

4. Which of the following was the key point of Darwin and Wallace's theory of evolution by natural selection?

Biology
1 answer:
Gnesinka [82]3 years ago
6 0

Answer:

variation

Explanation:

he was trying to produce different types of species from over time they cross-breed and make a new type of bird.

^-^

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The number of waves passing the observer per second is:
MrRissso [65]

Answer:

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Explanation:

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Mendel discovered that the allele for green seed pods (G) is dominant to the allele for yellow seed pods (g). He crossed true-br
finlep [7]

Answer:

GG, Gg, Gg, gg

Homozygous green – GG

Heterozygous green – Gg

Homozygous yellow - gg

Explanation:

It is given that allele for green seed pods (G) is dominant to the allele for yellow seed pods (g) which means that if “G” and “g” occur together, a trait associated with G will be expressed.  

The genotype of the true breeding Green plant is “GG”  

The genotype of the true-breeding yellow plant is “gg”  

F1 generation cross  

GG * gg

Offspring produced from F1 generation are – Gg, Gg, Gg, Gg

In f2 generation offspring of F1 generation are crossed among each other.  

So the offspring produced in F2 generation are  

Gg * Gg

GG, Gg, Gg, gg

Homozygous green – GG

Heterozygous green – Gg

Homozygous yellow - gg

8 0
3 years ago
Which two of these characteristics are shared by the planets Uranus and Neptune?
faltersainse [42]

Answer:

 Some of the similarities between the planet Uranus and Neptune are:

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  • Both Uranus and Neptune have an Earth- sized solid center.
  • The atmosphere of both the planets comprises of the gases, hydrogen, helium and methane.
  • Due to the presence of methane gas, both the planet Uranus and Neptune have the same blue colour.

8 0
2 years ago
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