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2 years ago

(NEED HELP ASAP) BRAINLIEST NO FAKE ANSWERS

Biology

2 answers:

tresset_1 [31]2 years ago

5 0

U thought you was getting free answers but I’d help you but that a lot anyways thanks for the point ly

konstantin123 [22]2 years ago

4 0

Answer:

scientist is attempting to build a cladogram that shows the evolutionary closeness of three organisms in relation to humans. After doing DNA analysis, they determine that the organisms share the following percentages of DNA:

Organism A and humans share 85% of their DNA.

Organism B and humans share 80% of their DNA.

Organism C and humans share 90% of their DNA.

Based on this information, which order should they go on the cladogram (from least related to most related)?

(1 point)

A, B, C, humans

C, B, A, humans

C, A, B, humans

B, A, C, humans

2.A cladogram shows the evolutionary relationship between humans, chimpanzees, and gorillas. The cladogram currently shows humans and chimpanzees with a more recent common ancestor compared to gorillas. Which piece of evidence, if true, would most likely weaken this hypothesis?(1 point)

Fossils of humans appear in deeper sedimentary rock layers compared to fossils of chimpanzees.

Amino acid analysis of the cytochrome c protein shows significant differences in the sequence of amino acids between humans and gorillas.

DNA sequence analysis of the hemoglobin alpha gene shows that humans and chimpanzees have a more similar sequence to each other than they do to the gorilla’s DNA sequence.

The cells of the eye in embryos of gorillas and humans follow a similar pattern of development while chimpanzee embryos are different.

3.The forelimbs of bats and humans have a very similar bone structure even though they appear very different on the outside. These structures are known as __________ because they result from species evolving __________.

Which of the following answer choices correctly completes the above statement?

(1 point)

homologies; similar adaptations in similar environments

analogies; from the same common ancestor

analogies; similar adaptations in similar environments

homologies; from the same common ancestor

4.All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about vertebrates?(1 point)

The embryos of these species require these structures to survive.

These species evolved in similar environments.

These species have the exact same DNA sequence.

These species share a common ancestor.

5.Fossil A is found closer to the surface compared to Fossil B. Which of the following conclusions can be made based on this statement?(1 point)

Fossil A is from an older species than Fossil B.

The species of Fossil A existed at the same time as the species of Fossil B.

The species of Fossil A evolved from the species of Fossil B.

Fossil B is most likely older than Fossil A.

6.Vertebrate embryos all follow a very similar developmental process. Which statement could explain this similarity?(1 point)

All vertebrates require the same nutrients during embryological development.

All vertebrates develop a backbone that protects the spinal cord.

All vertebrates inherit the same sequence of DNA from their parents.

All vertebrates live in similar environments which require the same adaptations.

7.Some mutations, or changes in the sequence of DNA, do not have any effect on the characteristics of the organism. Why is this?(1 point)

The immune system repairs the mutated sequence during development.

The protein built from this mutated sequence is deactivated by the cell.

The mutated sequence still codes for the same amino acid.

The cell recognizes mutations and ignores them when expressing the gene.

8.What is typically studied when analyzing not-yet-born (or unhatched) animals?(1 point)

embryological development

evolutionary theory

causal records

DNA sequencing

9.What can scientists analyze to get a better understanding of how plants and animals evolved from a common ancestor?(1 point)

petrified bones and imprints of plants

DNA molecules

vertebrate embryos

life cycles and behaviors

10.How can embryos help scientists understand evolution?(1 point)

Embryos contain the code for all life on Earth.

Embryos go through various stages that suggest the animal’s evolutionary process.

Embryos provide evidence for which life forms existed at the same time.

Embryos are frequently fossilized and illustrate change over time.

11.Astronomers have made great strides in sending probes out to other planets and moons in our solar system. If they were to find a living creature some place other than Earth, how could DNA analysis help them better understand the organism? Explain in 1–2 sentences.(2 points)

12.In 1973, biologist Theodosius Dobzhansky wrote an essay titled “Nothing in Biology Makes Sense Except in the Light of Evolution.” Why is evolution so important for understanding biology? Explain your answer in 1–2 sentences.(2 points)

13.You are a scientist tasked with writing a journal article on the evolution of alligators. In 3–5 sentences, describe the different forms of evidence you might use to analyze the evolution of alligators.(4 points

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What determines whether an allele is dominant recessive or codominant?

expeople1 [14]

Based on the gene expression for instance if one parent is tall and and one parent is short it depends if the child is tall or short. if the child is tall then tallness is dominant ans shortness is recessive if the child is short that shortness is dominant and tallness is reccesive. however for codominance its a blending or mixture of both alleles. if a white flour and red a flower are mixed and its offspring is pink that is codominance. hope it helps!

6 0

2 years ago

Vision

Talja [164]

<h2>Answer:</h2>

Option B) The parent cell has 24 chromosomes.

<h2>Explanation:</h2>

This is because:

In Asexual reproduction only one parent is required, unlike sexual reproduction which needs two parents. Since there is only one parent, there is no fusion of gametes and no mixing of genetic information. As a result, the offspring are genetically identical to the parent and to each other.
The parent cell simply divides to form two daughter cells that are identical to the parent. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote.
Haploid gametes are not involved in asexual reproduction. A parent passes all of its genetic material to the next generation, and hence the number of chromosomes remains same.

Result: The number of chromosomes remains same in asexual reproduction.

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2 years ago

It is often stated that the phosphate bonds in atp are "high energy," but in fact, they are not notably high in energy. rather,

Vera_Pavlovna [14]

The answer is Negative charges on phosphate groups repel each other. The oxygen groups of a phosphoanhydride in ATP have electron cloud that repels each other. On hydrolysis, once a phosphate is lost, the electrostatic repulsion is reduced.

When ATP is hydrolyzed, it forms more hydrogen bonds with surrounding water molecules that when ATP is unhydrolyzed. Therefore, more energy is released since more bonds are formed than are broken. The net delta G is positive during hydrolysis of ATP.

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2 years ago

HEYYYY CAN SOMEONE HELP ME WOTH THIS WORKSHEET PLZ

Tems11 [23]

Answer: substitution mutation

Explanation:

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2 years ago

The sister taxon of the Chordata is the _____.

snow_tiger [21]

Answer:

Ambulacraria

Explanation:

Ambulacraria or Coelomopora is an invertebrate clade that encompasses the Echinodermata and Hemichordata within the deuterostomies. This grouping is considered Chordata's sister taxon because it has a common ancestor.

The phylum Chordata is considered the last within the evolutionary range and comprises all vertebrates and some invertebrates such as amphioxus and tunicates. The main feature of this phylum is the presence of notochord in at least one of its embryonic phases. In vertebrates, the notochord will later make room for the Vertebral Column.

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2 years ago