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3 years ago

5

Consider a cell in which all of the homologous chromosomes experience nondisjunction during meiosis ii. what would be the result

of this event?

1 answer:

Setler79 [48]3 years ago

8 0

It will produce gametes that has abnormal no. of chromosomes

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Which organisms carry out respiration,growth,movement and excretion

Nezavi [6.7K]

Answer:

Animals only is the correct answer

Explanation:

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3 years ago

The inability of organisms to evolve anything that could be an advantage reflects _____.

sergey [27]

The inability of organisms to evolve anything that could be an advantage reflects "the limit of historical constraints".

<h3>What is the limit of historical constraints of evolution?</h3>

Although evolution is a powerful process that leads to

rapid changes in the characteristics of organisms, limits

to evolution arise from a lack of genetic variation, a

loss of well-adapted genotypes in populations due to

gene flow, trait interactions leading to trade-offs, and/

or the difficulty of evolving simultaneous changes in a

number of traits. This is the limit of historical constraints of evolution.

<h3>What are the factors that can cause an organism to evolve?</h3>

Four main factors lead to evolution:

(1) the potential for a species to diversify;

(2) heritable genetic variation among individuals within a species as a result of mutation and sexual reproduction;

(3) competition for scarce resources; and

(4) the spread of organisms that are better able to endure and procreate in the environment.

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2 years ago

Is the pit that marks where the umbilical cord was attached before birth?

liubo4ka [24]

The pit that marks the location of the umbilical cord after birth is known as the navel or belly button. All animals that grow placenta during fetal development will have a navel or belly button. The scientific name of the structure is the umbillicus. It can be a depression in some individuals or raised in others.

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3 years ago

Draw the structure of DNA aand write a short note about it.

artcher [175]

Answer:

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

Explanation:

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3 years ago

How are messages sent around the body

VARVARA [1.3K]

They go to the brain then sent out to the rest of your body

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3 years ago

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