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tamaranim1 [39]
3 years ago
7

How does our understanding of genetics today refute lamarck's principle of the inheritance of acquired characteristics?

Biology
1 answer:
likoan [24]3 years ago
5 0
Genetical experiments suggest that traits acquired during a person's lifetime are not inherited as proposed by Lamarck's theory that traits acquired or changed over an individual's lifetime could be passed on to its offspring. Through experiments, scientists through many observations and real examples that changes that often occur in an animal's life are not passed down to it's offspring.
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Expected prevalence of a disease is:______.
goldfiish [28.3K]

Answer: c) the anticipated geographical spread of a disease based on past observances.

Explanation: Prevalence simply means the widespread of a thing or condition. In epidemiology, prevalence can be defined as the total number of people in a population that is affected by a medical condition or total number of cases of a disease in a population in a given period of time.

Expected prevalence of a disease is therefore the anticipated widespread of a disease or the anticipated total number of cases of a disease in a population based on past observed incidences.

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3 years ago
Which of the following is considered a sustainable use of a common?
Veronika [31]
D- Park Clean-ups is the correct answer to this question.
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Which of the following is a likely cause of sea level rise?
Tpy6a [65]

Answer:

A

Explanation:

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3 years ago
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What would be the ploidy of the viable gametes produced by a tetraploid individual if nondisjunction of all chromosomes occurred
sattari [20]

Answer:

Tetraploid

Explanation:

Ploidy:

Ploidy is a biological term used for the presence of number of chromosome sets in a cell. Cells can be haploid (gametes), diploid (two chromosomal sets) and polyploid (more than two chromosomal sets).

Polyploidy:

A condition that entails the possession of more than two sets of chromosomes in the cell. Normal cells are diploid (2n) i.e they contain two sets of chromosomes, one from each parents. Polyploid individuals contain three (triploid, 3n), four (tetraploid, 4n), five (pentaploid, 5n) number of chromosomes and so on.

Under normal disjunction of chromosomes, a tetraploid cell will produce two diploid daughter cells each with two sets of chromosomes.

However, in the case of non-disjunction of all chromosomes in a tetraploid individual, two tetraploid daughter cells will be produced at the end of meiosis 1.

Non-disjunction of all chromosomes means that one daughter cell has received all 4 sets of chromosomes while the other is null i.e. contains zero chromosomal sets.

7 0
3 years ago
Which process is not an example of a cell maintaining homeostasis?
evablogger [386]

Answer:

Option C. Allowing molecules to pass through its cell membrane, is the correct statement.

Explanation:

Homeostasis refers to the maintaining of equilibrium state inside the cell. Homeostasis increases the size of the cell to make transportation more efficient. It also removes nitrogenous waste materials from the cell. It also stabilize water concentration inside the cytoplasm of the cells and make the cell hydrated.

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3 years ago
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