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Alex777 [14]
2 years ago
6

1.) What organism is essential for the nitrogen cycle to continue?

Biology
1 answer:
yaroslaw [1]2 years ago
8 0

im not even sure tbh these are really hard im so sorry

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Help with these two questions, porfavor! :'/
Aliun [14]

The number of chromosomes does not correlate with the apparent complexity of an animal or a plant:

in humans, for example, the diploid number is 2n = 46 (that is, 23 pairs), compared with 2n = 78, or 39 pairs, in the dog and 2n = 36 (18) in the common earthworm.

4 0
3 years ago
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In a grassland ecosystem, a prolonged drought has caused depletion in food sourſes for a species of rabbit
Archy [21]
Some individuals in the rabbit population must evolve traits that improve their survival chances
5 0
3 years ago
In whole-genome shotgun sequencing, the chromosome is cut into pieces, the pieces are sequenced, and the sequences are aligned b
Lesechka [4]

Answer:

CCAGGCC

CCATCGA

GGCCATC

CAT

AGGCCAT

CATCGAG

Explanation:

Shotgun sequencing is a method used to determine the nucleotide sequence of entire chromosomes/genomes. This sequencing method consists of obtaining random DNA fragments which are subsequently classified by bioinformatic tools that ordering them according to overlapping sequences called contigs. In the whole-genome shotgun (WGS) technique, the entire genome of an organism is sequenced, being the critical factor the depth of sequencing, which refers to the quality of the sequencing reads (e.g., a depth of 20X indicates that the genome is sequenced 20 times by a sequencing machine). For the human genome, WGS became available after the completion of the Human Genome Project (HGP), which enabled the generation of a reference sequence for the whole human genome. The steps of the WGS technique are the following:

1. Preparation of isolated chromosomes

2. The DNA is sheared into small fragments

3. The DNA fragments of about 1 kilobase (1000 base pairs) are incorporated into plasmids which are cloned to render pure samples of each DNA fragment

4. The plasmid clones are sequenced by sequencing machines

5. Bioinformatic tools finally are used to link DNA fragments by their overlapping ends

3 0
3 years ago
Janna and Sarah are identical twins who were raised apart. Lisa and Shirley are nonrelated adopted siblings who were raised in t
schepotkina [342]
Lisa and Shirley, because upbringing has more of an impact than genes
5 0
3 years ago
What part of the female system is the usual site of fertilization of the ovulated oocyte?.
Paul [167]

Fertilization of the egg cell by the sperm usually takes place in the fallopian tube. The fertilized egg then travels to the uterus and implants in the endometrium.

<h3>What are fallopian tubes?</h3>
  • Fallopian tubes are also called oviducts or uterine tubes. It is the passage through which the egg enters the uterine cavity from the ovary.
  • Fallopian tubes are part of the reproductive tract. They have a smooth muscle wall, an inner mucous membrane, and an outer layer of loose supporting tissue (serosa).
<h3>Why does fertilization take place in the fallopian tubes?</h3>

The fallopian tube (oviduct) regulates fertilization through sperm induction and sperm hyperactivity. Sperm induction is achieved by rheotaxis, thermotaxis, and chemotaxis. Rheotaxis is caused by tubal fluid that creates a current flow from the tubal ampulla to the tubal isthmus.

To learn more about fallopian tubes visit:

brainly.com/question/12711470

#SPJ1

8 0
1 year ago
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