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3 years ago

______ is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis

Biology

1 answer:

lara [203]3 years ago

7 0

Answer:

Crossing over.

Explanation:

I do believe that is the correct answer.

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What is the role of DNA in transmitting genetic information? Describe DNA’s important genetic role in a few sentences below.

Dafna1 [17]

Hey could you just mind yiu own business like sheshhhhhhhh

7 0

3 years ago

Transcribe and translate dna

Mariana [72]

Answer:

The human genome contains around 30 000 genes, each of which codes for one protein. Large stretches of DNA in the human genome are transcribed but do not code for proteins. ... The process by which DNA is copied to RNA is called transcription, and that by which RNA is used to produce proteins is called translation.

Explanation:

5 0

3 years ago

Read 2 more answers

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP :((((((( PLEASE

7nadin3 [17]

Answer:

anther

Explanation:

The anther is responsible for producing cells by meiosis

6 0

3 years ago

What is a teratogen? An aspect of an individual's personality believed to be biologically based A highly specialized nerve cell

iren2701 [21]

Answer:

An environmental factors that can harm a developing embryo and fetus.

Explanation:

Teratogens are kind of agents that create disturbance to the developing fetus or embryo or may create birth defects in a child.

Teratogens may be a drug, or chemicals or radiation and material infection.

It halt pregnancy or form congenital malformation.

They are environmental factors which results in permanent structural and functional malformation that in turn leads to death of the embryo.

Some example of potential teratogens are-

Caotopril,lisinoprils,ramipri,alcohols,antibiotics such as tetracycline,doxycycline,streptomycin,wrfarin,seizure medicines,phenytoin,valptoic acid,carbamazepine,anti cancer or anti metabolite drugs like methotrexate,penicilline,depen ,anti thyroidal drugs such as thiouracil,carbimazole etc.

5 0

3 years ago

Reorder by size<br> Cell, nucious DNA, chromosoma,gen, nucleoti

sp2606 [1]

Answer:

Explanation:

The arrangement below is from the smallest to the biggest

nucleotide → nucleus DNA → gene → chromosome → cell

The nucleotide is the smallest because it is what makes up the DNA, it is made up of a nitrogenous base, ribose sugar and a phosphate group.

Nucleus DNA follows because it is bigger than a nucleotide (as said earlier) but is singly found in the chromosome which is present in the nucleus.

The gene, which can be assumed to be the entire genome of the organism, involves both the chromosomal gene and the extrachromosomal gene (like the mitochondrial DNA).

Chromosome is made up of a DNA molecule and protein which makes it bigger than the Nucleus DNA and the gene because it contains several genes.

The Cell contains all the molecules/organelles mentioned above and as such is the largest among them all.

Note that the spellings the question are wrong and have been corrected in the answers provided

5 0

3 years ago