Which of the following best describes an organism with a genotype of 2 different alleles (Bb)?

Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Down syndrome is a geneti

Licemer1 [7]

Answer:

Trisomy 21 would show presence of an extra copy of chromosome 21 in a karyotype

Explanation:

Humans are diploid organisms, having 23 pairs of chromosomes (46 chromosomes in each cell. Trisomy represents a chromosomal disorder, with presence of an additional chromosome (total 47 chromosomes, instead of 46).

Down syndrome is a genetic disorder caused by trisomy of chromosome 21. Karyotype is used to represent appearance and number of chromosomes present in nucleus of a cell.

Thus, in karyotype trisomy 21 there would be an additional copy of chromosome 21. Diagram of karyotype trisomy 21 is attached with answer.

A karyotype is the number and appearance of chromosomes in the nucleus of an eukaryotic cell.

6 0

3 years ago

I need the answer to number 8 please :)

Sveta_85 [38]

Answer:

A. is Plantae

B- Fungi

C- Bacteria

D- Animalia

4 0

3 years ago

Read 2 more answers

Plzzzzz help

Levart [38]

The scientific method includes the problem statement, previous knowledge, hypothesis and goals, methodology, results, and discusion/conclusion. The correct option is C. form a conclusion.

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The scientific method is a research method that consists of systematic observations, measures, experimentation, analysis, and verification of a hypothesis. It is based on reproducibility and refutability.

When conducting an experiment, you need to consider,

Definition and problem statement. The question for which there is not an answer yet. A question the investigator wants to answer.

Theoretical framework. Antecedents from other investigations. Previous knowledge about the study object is always required for a better understanding.

The main goal of the study is basically what the investigator wants to find out.

Hypothesis formulation. The researcher makes a hypothesis to predict or make a conjecture -not verified and which requires corroboration- about what is going on or expected to happen.

Identification of the study groups, involved variables -independent, dependent, and control-.

Methodology description. Steps needed to get data.

Results. It includes data statistical analysis. This step involves testing the observations.

Discussion and Conclusion, through which the hypothesis might be rejected or accepted.

In the exposed example, the researcher has already collected field data, and made analysis.

Probably, the marine biologist noticed, while analyzing the results, that turtles lay eggs from May to October. But there might have been a biotic or abiotic factor threatening the survival of the eggs during august.

According to the analysis the researcher concluded that the nest season involves monthes between may and october, and august turns to be the most critical month for nesting.

The correct option is C.

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You can learn more about Scientific Method at

brainly.com/question/7508826

4 0

3 years ago

El Niños tend to result in drier conditions across Australia. Which of these is likely to occur in Australia during La Niña?

N76 [4]

Since Australia is located in the Pacific ocean, extremes of weather and climate happen throughout a season. El Niño is traditionally defined as a dry climate with reduced rainfall; in this happens to be more extreme in Australia because of its location. La Niña on the other hand is traditionally defined as a wet or cool climate with lots of rainfall; and this is indifferent as La Niña in Australia tend to be more extreme too.

7 0

4 years ago

Read 2 more answers

Vaccination against the hepatitis a virus is unnecessary if you:

padilas [110]

If you have hepatitis A infection you have inflammation in your liver that's caused by a virus. Other symptoms of this virus are jaundice (yellow eyes and skin, dark urine), pain in your belly, loss of appetite, nausea, fever, diarrhea and fatigue. A vaccination against this virus is unnecessary if you have been infected in the past.

7 0

3 years ago