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stich3 [128]
3 years ago
12

About how many brain connections will be present on average for a 3 year old

Biology
2 answers:
Liono4ka [1.6K]3 years ago
5 0
About 1,270 or 1,090 Brian connections
valkas [14]3 years ago
4 0
Not much because the baby's have alot of bones but when it comes to nerves it is a little bit babys need time to regenerate
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How do pioneer species make ecological succession possible on an island following a volcanic eruption? *
Doss [256]

Answer: Primary succession occurs after a volcanic eruption or earthquake; it involves the breakdown of rocks by lichens to create new, nutrient -rich soils. The first species to colonize an area after a major disturbance are called pioneer species; they help to form the new environment.

Explanation:you welcome

8 0
3 years ago
En el hombre el color negro de los ojos “A” domina sobre el color azul “a” Una pareja en la que el hombre tiene los ojos negros
umka21 [38]

Las respuestas a estas preguntas son:

a) Genotipo del padre Aa (ojos negros)

b) Cruzamiento: Aa (padre) x aa (madre)

c) Frecuencias genotípicas esperadas: 1/2 Aa; 1/2 aa  

En genética, dominancia completa se refiere al proceso  de herencia en la cual un individuo heterocigota, es decir, el individuo que presenta dos alelos diferentes para el mismo gen, presenta el mismo fenotipo que un individuo homo-cigota para el alelo dominante (el alelo dominante es aquel que enmascara la expresión del alelo recesivo en individuos heterocigotas).

En este caso, el carácter 'color de ojos' presenta un patrón de herencia monogénica, donde el alelo 'A' dominante codifica para el rasgo fenotípico ojos negros, mientras que el alelo 'a' recesivo codifica para el rasgo fenotípico ojos azules.  

En el ejemplo, la pareja tuvo progenie en la cual uno de los hijos presenta el rasgo recesivo ojos claros, con lo cual el padre debe ser heterocigota y poseer un alelo recesivo 'a'; mientras que la madre expresa el fenotipo recesivo y por lo tanto su genotipo es 'aa'. En consecuencia, el cruzamiento de un padre heterozigota 'Aa' con una madre homo-cigota recesivo 'aa' producirá una descendencia con una frecuencia genotípica esperada de 1/2 (50%) de hijos con ojos 'color negro' de genotipo Aa y 1/2 (50%) de hijos con ojos 'color celelste' de genotipo aa >>

Cruzamiento: Aa (padre) x aa (madre)

Gametos padre: 1/2 A; 1/2 a

Gametos madre: 100% a

Cuadro de Punett (combinaciones gaméticas):

                  A           a

a               Aa          aa

a               Aa          aa

En consecuencia,  este cruzamiento producirá 50% individuos ojos color negro (genotipo Aa) y 50% individuos con ojos color celelste (genotipo aa)

Podés encontrar más información sobre este tema en:

brainly.com/question/22398195?referrer=searchResults

7 0
2 years ago
Neurosecretory cells make and release the hormones of the posterior pituitary. The cell bodies of these neurosecretory cells rec
REY [17]

Neurosecretory cells make and release the hormones from the posterior pituitary. The cell bodies of these neurosecretory cells receive synapses from Afferent neuron and their axon terminals release hormones into blood stream or the local extracellular space.

Neurohormone is  generally produced by neurosecretory cells and liberated by nerve impulses. Neurosecretory cells receive synapses from afferent neurons to guide magnocellular neurons .

A synapse is known as a  small junction at the end of a neuron that allows any signal to pass through one neuron to another. Synapse is a junction were the one neuron get connected with the other neuron .

To learn more about neuron , here

brainly.com/question/24217914

#SPJ4

3 0
1 year ago
What are gymnosperms?
4vir4ik [10]
A gymnosperm is <span>a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.</span>
7 0
3 years ago
Read 2 more answers
Which of these elements is a noble gas? A. hydrogen (H) B. barium (Ba) C. nitrogen (N) D. krypton (Kr) E. bromine (B
OLEGan [10]

Answer:

the answer is krypton

3 0
3 years ago
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