A community means a group of various <em>different types of species</em> living together in a common location.
A population refers to a group of organisms of the <em>same species</em> living together in a location.
Therefore, <em>the statement communities only contain one population of organisms</em>, is False.
Answer:
secondary succession
Explanation:
<em>The kind of succession that will occur if no one mowed the grass at all is secondary succession.</em>
Succession generally refers to a gradual change in the structure of a community over a period of times. Succession could be primary or secondary.
Primary succession occur when a site that has not held any form of life before gets colonised by a new life. The new lives are referred to as pioneer species.
Secondary succession occur when a community that already has lives in it experiences a regime of disturbance. The structure of the community will change in response to the disturbance.
Both primary and secondary succession eventually lead to a relatively stable community, otherwise known as climax community.
<u>In this case, a baseball field that normal gets mowed every summer stops getting mowed. the community will experience secondary succession and keep changing till a level is reached where the structure hardly changes again. This level is the climax community.</u>
Step 1: Figure out genotypes of parents
Jessica's mom: I^A I^B
Jessica's dad: ii
Step 2: Punnett Square:
( i ) ( i )
(I^A) I^Ai I^Ai
(I^B) I^Bi I^Bi
Step 3: List possible phenotypes
Jessica could be either blood type A (I^Ai) or blood type B (I^Bi)
Question 1:
Exons are gene fragments whose DNA sequence after transcription is found in mature mRNAs. This part of the gene is most often coding.
The size of the exons in the genomes follows a log-normal distribution, with an average length of about 150 nucleotides, knowing that in eukaryotes, each gene contains several exons and introns (an average of 8) so the size is 8*150 = 1200 bp.
Question 2:
Introns are fragment of a gene located between two exons. Introns are present in immature mRNA and absent in mature mRNA. "Non-coding" fragment of the gene.
The introns average in a gene is 3365 bp including 3'UTR and 5'UTR and intermediate introns.
Answer:
Ions are an atom or group of atoms that either has a positive or negative charge. An ion with a negative charge is called an anion and one with a positive charge is a cation.
Hope this helps :)
