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alexdok [17]
3 years ago
12

BRAINLIESTTT ASAP!!

Biology
1 answer:
Amanda [17]3 years ago
6 0

For #1, the last choice is correct. A geocentric model means that the earth is the center of the universe while all other bodies orbit around it. A heliocentric model means that the sun is the center of the inverse while the other bodies orbit around it. The shared feature is that the other bodies in space move in circular orbits.

For #2, the first answer is correct. When the moon is between the earth and the sun, positions X and Z are being pulled by the moon’s gravitational force, creating high tides at these places. However, positions W and Y are experiencing low tides because no gravitational pull is making them high.

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A population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1A2 genotype, and 123 have the A2A2 genotyp
lana [24]

Answer:

Frequency of allele A1- 0.41

Explanation:

In Hardy weinberg equilibrium,

P refers to the dominant allele

q refers to the recessive allele

The allele frequency will be p+q=1

The genotypic frequency is- P²+q²+2pq=1

P²= genotype of dominant trait ( A1A1)- 77

2pq= genotype of heterozygotes (2pq)- 65

q²= genotype of recessive trait (A2A2)-  123

Total number of offsprings= 77+  65+ 123

                                            = 265

Now to calculate allele frequency of A1=

\dfrac{\text{number of A1A1 offspring}}{ \text{total number of offspring}}+\dfrac{1}{2}(\dfrac{\text{number of A1A2 offspring}}{\text{total number of offspring}})

= 77/265 + 1/2( 65//265)

=  0.290+ 0.122

= 0.413

Thus, 0.41 is correct.

3 0
3 years ago
Explain natural selection and adaptations of bacteria
faust18 [17]

Natural selection can cause speciation, which increases the biodiversity of an ecosystem. Several bacterial colonies are placed on a petri dish that contains agar with antibiotics. After 24 hours, ninety percent of the original bacteria die, but the remaining ten percent survive and later reproduce.

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I need help asap. The melting and subsequent retreat of glaciers is a long process that may take centuries. Why is something so
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The answer should be B
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Why are seeds an evolutionary advantage for seed plants?
Romashka-Z-Leto [24]

The seeds an evolutionary advantage for seed plants because seeds develop into adults without sxual reproduction.

<h3>What is the evolutionary importance of the seed?</h3>

Seeds play an important role in the dispersion of plant species, that is, they ensure that plants spread throughout the environment. In addition to guaranteeing a greater area of ​​domain for the species, competition between the newly born plant and the mother plant is also avoided.

Seeds allow the expansion of a type of plant around the world in addition to being a form of asexual reproduction that makes it unnecessary to join gametes.

See more about seeds at brainly.com/question/15976369

#SPJ1

4 0
2 years ago
Explain the contribution that fungi make to their environment.
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Answer:

Fungi transform organic matter into forms that can be utilized by other decomposers, and into food for plants.

Explanation:

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3 years ago
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