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3 years ago

Why is resource management of forest important for economic

Biology

2 answers:

ki77a [65]3 years ago

7 0

Answer:

its important because people would just go chopping down trees left and right without any reason. thus they need rescource management of the forests.

Explanation:

another reason is because we need forests to keep the temperature of the surface lower and slow down global warming.

JulijaS [17]3 years ago

3 0

Answer:

timber, plant medicinal resources, genetic materials, and recently a source for generating carbon credits.

Explanation:

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In hamsters, we can examine the genes for coat color and eye color which are linked:B = brown coat, b = white coat, G = green ey

Inessa [10]

Answer:

10.2 cM

Explanation:

Given,

pure breeding parent 1 : BBgg = brown coat and pink eyes

pure breeding parent 2 : bbGG = white coat and green eyes

BBGG X bbgg = F1 = BbGg ( All are brown with green eyes )

When F1 progeny is test crossed with white coat and pink eyes hamster:

BbGg X BbGg = F2 =

brown, pink eyes = 99 = parental

white, green eyes = 103 = parental

brown, green eyes = 12 = recombinant

white, pink eyes = 11 = recombinant

Recombination frequency =

(total number of recombinants / total progeny ) * 100

= [( 11 + 12 ) / ( 99 + 103 + 12 + 11 )] * 100 = (23/225)*100 = 0.102 * 100 = 10.2 %

1 % recombination frequency = 1 cM distance between genes

Hence, the distance between B and G gene is 10.2 cM

4 0

4 years ago

Use the probability method to calculate the genotypes and genotypic proportions of a cross between AABBCc and Aabbcc parents.

lora16 [44]

For this, you need to use Punnett squares.

You know the genotype of the parents, and for the cross, you need to separate into two alleles, both genes.

AABBCc divided like ABC and ABc.

Aabbcc divided like Abc and abc.

Now you can cross them, and all probabilities will be:

AABbCc, AaBbCc, AABbcc and AaBbcc

So, you could say 25% of the offspring will be AaBbCc, 25% AaBbcc, 25% AABbCc, and 25% AABbcc

7 0

3 years ago

describe and explain the adaptations of sperm and ovum that enables fertilisation and early development of the embryo to occur

Mekhanik [1.2K]

The adaptations of the sperm and egg that allow fertilization to take place, and copulation occurs for the sperm to be deposited. These sperm penetrate the cervix and travel to the fallopian tube. There, they must find an oocyte, which is released in the process of ovulation.

<h3>What is fertilization and embryo development?</h3>

In the first weeks after fertilization, the zygote makes many changes and develops rapidly. The first eight weeks of development is known as the organogenic period and is the embryonic stage of development. This period is a crucial phase of development for the embryo's organs.

With this information, we can conclude that The first three days of embryonic development occur in the fallopian tube as the embryo moves from the ovary to the uterus. Cell division continues and forms a hollow ball of cells (the blastocyst). Six days after fertilization, the embryo begins implantation into the lining of the uterus.

Learn more about embryonic in brainly.com/question/14560716

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4 0

2 years ago

The majority of scientists hold the view that global warming is due to human

katovenus [111]

Answer: Whatis the answer i need help

Explanation: helllo

7 0

2 years ago

nerve networks that include both sympathetic and parasympathetic fibers that reach the same structure are called nerve networks

Lelechka [254]

Central plexuses are the name for nerve networks with sympathetic and parasympathetic fibers that all travel to the same structur automobile plexuses.

<h3>What is the term for a sympathetic and parasympathetic network?</h3>

Involuntary physiological activities including heart rate, blood pressure, breathing, digestion, and sexual arousal are regulated by the autonomic nervous system, a part of the peripheral nervous system. Sympathetic, parasympathetic, and enteric are its three physically separate divisions.

<h3>Can a nerve have both parasympathetic and sympathetic functions?</h3>

Both sympathetic and parasympathetic nerves innervate several target areas (eg the heart, the iris muscle, some salivary glands, the gastrointestinal tract and pelvic organs).

To know more about autonomic plexuses visit:-

brainly.com/question/6575249

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4 0

1 year ago