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Svetllana [295]
3 years ago
13

The incidence of down's syndrome increases with the age of the mother. a. True b. False

Biology
1 answer:
Darina [25.2K]3 years ago
6 0
A) the answer is true
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Which statement is true about the total number of chromosomes in most eukaryotic cells? A. Chromosome numbers vary widely. B. Pl
svet-max [94.6K]

Answer: The correct answer is- A. Chromosome numbers vary widely.

Chromosome can be described as thread like structure that is composed of DNA ( deoxyribonucleic acid) and possesses genes ( segment of DNA coding for a particular protein) on it.

Eukaryotic cells ( such as plant cell, animal cell) have variable number of chromosomes.

For instance, human beings have 23 pairs of chromosomes whereas it is different in plants depending on the species.

Thus, A) is the right answer.

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dolphi86 [110]

Answer:

d) descent with modification

Explanation:

According to my research on Darwin's theory of natural selection, I can say that based on the information provided within the question the term being described is called descent with modification. This basically refers to the most dominant traits being passed down from generation to generation, and being modified little by little in each lineage. Which is done through natural selection.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

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M phase is the period in the life of the cell when it is conducting cell division
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Animals that advertise their poisonous or dangerous qualities use a defense called ________ mimicry.
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What is the only way that carbon dioxide is removed from the carbon cycle?
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Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.

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