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Zina [86]
3 years ago
6

What is the function of the structure labeled nucleus

Biology
1 answer:
Tju [1.3M]3 years ago
3 0

The nucleus is found in eukaryotic cells. The nucleus organizes DNA molecules, along with some protein, to create chromosomes.

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What designs the shape and size of all animals that are multi-cellar and have a back-bone
pickupchik [31]

Answer

Environmental pressures

Basically every animal adapts to pressures from their environment in different ways, causing them to have different shapes and sizes

8 0
3 years ago
Which of these options represents the correct flow of events during meiosis II?
Nuetrik [128]
The correct answer is A.) Sister chromatids pulled to opposite pole, nucleoli form, cytokinesis.  
4 0
3 years ago
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If two intermediate-colored chickens together produced 100 chicks, how many would you expect to be black?
sergiy2304 [10]

Answer: 25 of the chicks will be black

Explanation: Since the chickens are intermediate in colour, that is they are not black, they are heterozygous. Let B represent the allele for black colour and B represent the allele for blue colour, therefore the genotype of a chicken with an intermediate colour is Bb. A cross between two Bb chicken will produce 1 BB, 2 Bb and 1 bb chicks. 1 BB will manifest outwardly as black, 2Bb will manifest outwardly as intermediate colored while 1 bb will manifest outwardly as blue colored chicks.

Since one out of four chicks are black colored, if the two chicken produced 100 chicks, the number of chicks that will be black is 1/4 x 100 = 25. Therefore, 25 chicks out of 100 will be black.

See the attached punnet square for more information

7 0
3 years ago
Hypersecretion of prolactin from the anterior pituitary gland causes the condition of ________. dwarfism postpartum hemorrhage g
kolbaska11 [484]

Hypersecretion of the population from the anterior pituitary gland causes the condition of galactorrhea.

Prolactin is another name is called luteotropin and its main function is to enable mammals mostly female to produce milk. The pituitary gland secretes it in response to mating, estrogen treatment, ovulation, nursing and eating.

The pituitary gland is attached to the hypothalamus by a short stalk. The pituitary gland has two major parts.

(i)                  An anterior lobe

(ii)                Posterior lobe.

The pituitary gland is controlled by hormones and neurons that comes in the hypothalamus where it acts as a link between brain and endocrine system, and hypothalamus is the endocrine gland itself. Hypothalamus has neurons which regulate secretion of anterior lobe hormones by secreting inhibit and releasing  hormones. Every hormone produced by anterior lobe has a releasing hormone.

Prolactin and growth hormones have inhibiting hormone. Releasing hormone helps in stimulating production and it releases hormones from the anterior lobe.

3 0
3 years ago
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Where are CO2 and O2 found primarily in our environment? A.life forms B.atmosphere C.rock/soil
valkas [14]
B. atmosphere since the atmosphere is made up of o2, co2 (a greenhouse gas) and nitrogen. those are the primary elements

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3 years ago
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