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r-ruslan [8.4K]
3 years ago
11

Can someone make a pedigree chart for this?

Biology
1 answer:
lesya692 [45]3 years ago
4 0
Five to seven three to four
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Brainliest to who types this up correctly!!!
evablogger [386]

Answer:

The Y chromosome is an accurate indicator of a person's external sex organs.

Explanation:

Since females have two X chromosomes while males have one X and one Y chromosome, if you are aware of the presence of a Y chromosome you can safely assume that a person is a male. Therefore, you can assume what external sex organs a male has.

3 0
3 years ago
What are seasons? What causes them?
trasher [3.6K]
Seasons are Winter, Spring, Summer And Fall. The Sun moving (orbiting earth) causes them. So in the winter, the sun is on the opposite side of the world, and that's why it is so cold. In the summer, the sun is facing straight at us. Other season's, the sun is kinda in between, if that is any help
3 0
3 years ago
Food chains always start with which kind of organism? Question 3 options: Decomposer Consumer Carnivore Producer
Valentin [98]

Answer:

Producers!

Explanation:

Autotrophs are the foundation of every ecosystem on the planet. That may sound dramatic, but it's no exaggeration! Autotrophs form the base of food chains and food webs, and the energy they capture from light or chemicals sustains all the other organisms in the community. When we're talking about their role in food chains, we can call autotrophs producers.

3 0
3 years ago
En los seres vivos acuaticos el oxigeno es tomado del __________ y penetra a la celula por el fenomeno de ___________
andrezito [222]

Answer:

En los seres vivos acuáticos el oxigeno es tomado del <u><em>agua</em></u> y penetra a la célula por el fenómeno de <em><u>respiración branquial.</u></em>

Explanation:

La respiración es el proceso mediante el cual los seres vivos obtienen oxígeno.  Es decir, la respiración implica el reemplazo del dióxido de carbono en los pulmones por oxígeno del aire, y puede ser pulmonar, branquial, traqueal o cutánea.

La respiración branquial es un tipo de respiración propia de la mayoría de los animales acuáticos y se lleva a cabo en las branquias, unas estructuras con forma de láminas que contienen vasos sanguíneos. Los animales acuáticos dispone de estos órganos que permiten absorber el oxígeno que se encuentra en el agua y eliminar el dióxido de carbono.

El agua que entra por la boca y circula por las branquias, donde el oxígeno es absorbido, pasa a la sangre y es transportado a todo el cuerpo donde se produce una respiración celular.

Es decir, <em><u>en los seres vivos acuáticos el oxigeno es tomado del agua y penetra a la célula por el fenómeno de respiración branquial.</u></em>

5 0
3 years ago
In the lab, you will change the number of birds with each beak phenotype for the second and third generations. What row of the d
nlexa [21]

Answer:

Percentage of food eaten by the flock

Why is the percentage of food eaten a good number to use? Explanation:

A percentage compares the number of birds in the flock to the total number of birds in all flocks.

If the percentage is high, the flock is more successful, so the flock should grow.

If the percentage is low, the flock is struggling to eat, so the flock should shrink.

6 0
3 years ago
Read 2 more answers
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