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mina [271]
3 years ago
15

HELP HELP HELP HELP I NEED THIS

Biology
2 answers:
dimulka [17.4K]3 years ago
5 0
Answer: A

Why? The main job of red blood cells, or erythrocytes, is to carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs. Hemoglobin (Hgb) is an important protein in the red blood cells that carries oxygen from the lungs to all parts of our body.

Hope this helps :D
mart [117]3 years ago
4 0

Answer:

i think its d sorry if im wrong :(

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How many americans over the age of 12 are estimated to be infected with the human papilloma virus?
11111nata11111 [884]

According to some research it is estimated that about 20% of americans of the age of 12 are infected with the human papilloma virus.

Hope it helped,

Happy homework/ study/ exam!

6 0
2 years ago
What do we call a life-form that is so small we need to look at it through a microscope in order to see it?
avanturin [10]
A Microorganism which can also be known as a Microbe or Microscopic organism
3 0
3 years ago
Pleeaasee help me its about plants and i dont know how do itttt
aalyn [17]

Petunia = perennial

Fescue grass = perennial

carrots = biennial

sweet corn = annual

tomato = annual

blueberry = perennial

cabbage = biennial

zinnia = annual

sugar maple = ??

blue spruce = annual

ur welcome xx

6 0
2 years ago
Read 2 more answers
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
Does someone know the answer to these??
s2008m [1.1K]

Answer:

I know that its true that fish have 4 limbs and its also true that sharks have bony skeletons

Explanation:

4 0
2 years ago
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