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ser-zykov [4K]
3 years ago
14

For one half of the year, the north end of Earth’s rotation leans toward __

Biology
1 answer:
Vikki [24]3 years ago
6 0

Answer:

Sun

Explanation:

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The car is blue. What does that tell you about the light interacting with it?
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A

Explanation:

because blue is being reflected, all other colors of light are being absorbed by the car.

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Which of the following is NOT a reason organisms perform the cell cycle?
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I honestly know its B cause I had the same question asked by my teacher

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What can you learn from observing and comparing the physical traits of different birds?
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The bananas eaten today are not the bananas that have always been eaten. In the early 1900's a different banana called the "Gros
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3 0
3 years ago
In pea plants, purple flowers are dominant to white flowers, and the purple and white alleles are represented with P and p, resp
amm1812

Answer: 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.

Explanation:

Heterozygous means that its genotype has two distinct alleles, i.e. a dominant and a recessive one. So the genotype of the plants is Pp, and each plant has two alleles since<u> they are diploid organisms, which have two copies of each gene. </u>

<u>Each plant produces gametes, which are haploids cells. That is, they only have one copy of each gene (one allele)</u>. So, the gametes produced by Pp have a P or p genotype.  During fertilization, the maternal and paternal gamete are fused to form a diploid zygote where their genotype will have one allele from the father and one from the mother.

By making this monohybrid cross, we cross the gametes of each parent in the punnett square (see picture)

In the offspring, we see one PP genotype (homozygous dominant), two Pp genotypes (heterozygous) and one pp genotype (homozygous recessive). <u>Since we know the P allele is dominant and it codes for purple color, a genotype only needs one P allele to express that phenotype</u>. So Pp and PP organisms are purple, and only pp is white. That means 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.

4 0
3 years ago
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