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3 years ago

Which of the following statements is true?

Biology

1 answer:

Paraphin [41]3 years ago

3 0

Functionality of Genes and chromosomes is described below.

Explanation:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes.
Genes are contained in chromosomes, which are in the cell nucleus.
A chromosome contains hundreds to thousands of genes.Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes.
A trait is any gene-determined characteristic and is often determined by more than one gene.Some traits are caused by mutated genes that are inherited or that are the result of a new gene mutation.
The body produces thousands of different enzymes. Thus, the entire structure and function of the body is governed by the types and amounts of proteins the body synthesizes. Protein synthesis is controlled by genes, which are contained on chromosomes.
the genotype is a complete set of instructions on how that person’s body synthesizes proteins and thus how that body is supposed to be built and function.
The phenotype is the actual structure and function of a person’s body. The phenotype is how the genotype manifests in a person—not all the instructions in the genotype may be carried out (or expressed). Whether and how a gene is expressed is determined not only by the genotype but also by the environment (including illnesses and diet) and other factors, some of which are unknown.
A karyotype is a picture of the full set of chromosomes in a person’s cells.

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Which of the following traits are unique to angiosperms and absent in the other plant groups?

MissTica

Answer options:

fruit
pollen
flower
seed
spore

Answer:

flower

fruit

Explanation:

Angiosperms include all flowering plants. Therefore, all plants in this group have flowers, whereas other groups do not.

Both angiosperms and gymnosperms have seeds, but angiosperms are defined by the fact that their seeds develop within a surrounding layer of usually the flower. Both angiosperms and gymnosperms also have pollen - likely an adaptation to living on dry land. Many plants produce spores, not just angiosperms.

Angiosperms produce fruit, unlike other plant groups. This fruit is the protective layer that encases their seeds, unlike gymnosperms, where the seeds are 'naked'

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3 years ago

When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes ________?

Natalija [7]

When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.

6 0

3 years ago

Which of the following best describes temperature?

erma4kov [3.2K]

Answer:

2) motion of molecules

Explanation:

heat is a form of energy, molecules with more energy 'vibrate' more

6 0

3 years ago

What is a parental genotype

WITCHER [35]

Answer:

offspring

Explanation:

A dominant allele is denoted by a capital letter (A versus a). Since each parent provides one allele, the possible combinations are: AA, Aa, and aa. Offspring whose genotype is either AA or Aa will have the dominant trait expressed phenotypically, while aa individuals express the recessive trait.

5 0

3 years ago

Read 2 more answers

Which of the proposed models for the mechanism of initial transcription suggests that the entire RNA polymerase enzyme moves alo

Degger [83]

Answer:

The right answer is Letter A

Explanation:

The proposed model for the mechanism of initial transcription that suggests the entire RNA polymerase enzyme moves along the DNA is transient-excursion model, and the proposed model that is best supported by experimental findings is scrunching model.

Because RNA polymerase leaves the promoter, translocate a short way along DNA template, synthesizes a short transcript before aborting transcript, releasing the transcript and returning to its original location on promoter. That is the transient-excursion model.

The scrunching model downstream DNA is pulled into the enzyme and has accumulated within the enzyme as single stranded bulges.

Experiments show that scrunching is right, experiments using single molecule analyses that allow the positions of different parts of polymerase to be measured relative to each other and to the template DNA during transcription.

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3 years ago