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torisob [31]
3 years ago
14

Catastrophic events on Earth have both negative and positive effects. One positive effect is the formation of new land features.

The Hawaiian Islands were formed from a catastrophic event, occurring many times. Each island in the chain is composed of at least one major
Biology
2 answers:
xz_007 [3.2K]3 years ago
8 0
Volcano, I believe. Hope I helped!
irina [24]3 years ago
5 0

glaciers scouring the land and melting

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Help please ^w^ plz.
MrRissso [65]
1. C
2.B
3.C
4. A
5. False
6.True
7.False
8.True
9.True
10. false

Hopefully this help
4 0
4 years ago
Freckles are a dominant trait in humans. Both of these girls have lots of freckles. Their mother has freckles but their father d
ycow [4]
So, lets say that the letter representing freckles is F for dominant or f for recessive
Clearly, the mother is F, while the father is f. which most likely gives the girls the genotype of Ff with one dominant freckle allele each which means they display the trait.
4 0
3 years ago
Read 2 more answers
Snapdragons are popular garden plants that produce brightly colored flowers. When a plant that is homozygous for white flowers i
elena-s [515]

Explanation:

Incomplete dominance is an intermediate effect of the dominance where the allele for a trait does not express its complete effect of a paired allele as a result both the alleles show their equal effect on the trait.

The generations are produced having a third trait as observed in the case of snapdragon flowers. In the case of flowers  

The allele which  

1. Determines the red color will be- R

2. Determines the white color will be- r

The monohybrid cross will have parents with genotypes:  

1. Red flower- RR

2. white flower-rr

The F₁ generation will have offsprings with genotype-  

RR X rr = Rr (Pink flower)

The F₂ generation will have offsprings with-  

Rr x Rr= RR, Rr and rr.

5 0
4 years ago
1. Where does the oxygen produced by photosynthesis come from?
denis-greek [22]

Answer:

water

Explanation:

6 0
2 years ago
In a standard monohybrid cross between purple-flowered and white-flowered peas, what fraction of the purple-flowered peas in the
Advocard [28]

Answer:

1/3

Explanation:

<em>A standard monohybrid cross is a cross that follows the dominance/recessive pattern from Mendel's experiment.</em>

It means the purple flower color is dominant over the white flower color.

Assuming the allele for purple flower color is P and that of the white flower color is p, a standard monohybrid cross will involve a true breeding PP and pp.

PP   x   pp: Pp, Pp, Pp and Pp. All the F1 offspring will have purple flowers with Pp genotype.

At F2: Pp   x   Pp = PP, Pp, Pp, and pp.

3/4 or 75% of the F2 offspring have purple flower color out of which 1 is true breeding for the trait.

Hence the fraction of the purple flowered peas in the F2 that is expected to be true-breeding (PP) is 1 out of 3.

7 0
3 years ago
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