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mixas84 [53]
3 years ago
6

3. For what purpose are the points where Earth's axis of rotation intersects

Biology
1 answer:
777dan777 [17]3 years ago
3 0

Answer:

The points at which Earth's axis of rotation intersects Earth's surface are used as reference points for defining direction. These points are the geographic North Pole and South Pole. Halfway between the poles, a circle called the equator divides Earth into the North and Southern Hemispheres.

Explanation:

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Greg was growing an unusual orange daisy in his garden. He carefully saved the seeds to plant next summer. What color might he e
rusak2 [61]

Answer: B

Explanation:

If he saved the seeds and waited till summer the rays of light would make the flower red.

5 0
2 years ago
What information on a pedigree can tell you whether a gene is a autosome or a sex chromosome ???
My name is Ann [436]

Answer:

What information on a pedigree can tell you whether a gene is on a autosome or not a sex chromosome? If in a pedigree, the occurrence of the disorder is 50/50 between females and males, then it shows that it is autosomal. If the disorder is mostly shown in males then it is a sex-linked trait.

Explanation:

4 0
3 years ago
a. What do the letters R and I represent ? b. What is the genotype of the pink-flowered snapdragons? c. Explain whether the alle
-Dominant- [34]

Answer:

a) R= allele for red colored flower

I= Allele for ivory flowers

b) Genotype of pink flowered plant: RI

c) Incomplete dominance

d) 100%

Explanation:

When the dominant allele is not able to fully mask the expression of the recessive allele in the heterozygous state, it is said to be incomplete dominance. The R and I alleles impart red and ivory color respectively to the flowers of the snapdragon plant. The heterozygous genotype "RI" imparts a pink color to the flowers and therefore, the alleles are said to exhibit incomplete dominance.

The genotype of red-flowered snapdragon plant = RR. The genotype of ivory flowered snapdragon plant= II. When a red-flowered snapdragon plant is crossed with an ivory flowered snapdragon plant, the progeny is heterozygous in nature with the "RI" genotype. The phenotype of the progeny is "Pink flower" since the R allele is incompletely dominant over the allele I.

5 0
3 years ago
Name and define the three main classes of symbiotic relationships. Give examples of each.
Crank
1. Mutualism ~ When both organisms benefit.

Egyptian Plover and crocodile

2. Commensalism ~ Only one organism benefits but the other remains neutral

Bird nest and Tree

3. Parasitism ~ Only one organism benefits and the other is harmed;

Dog and Ticks
4 0
3 years ago
Explain how natural selection is important to biomes and organisms.
OleMash [197]
"Results and survival and reproduction of organisms best suited for their current  environment."
8 0
3 years ago
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