1the atmosphere also protects living things on Earth from the sun's harmful ultraviolet radiation. 2tmosphere filters out these dangerous rays. 3The atmosphere also helps to sustain life of Earth. .4blocks harmful electromagnetic 5.provide oxgen

5 0

3 years ago

Read 2 more answers

In humans, the alleles for unattached earlobes is dominant over the allele for attached earlobes. The allele for dark hair domin

SVEN [57.7K]

First, let's define the alleles:

(Dominant) allele for unattached earlobes is E

Allele for attached earlobs is e

(Dominant) allele for dark hair is H

Allele for light hair is h

Heterozygous would mean that for both sets of alleles, they will be EeHh.

Now for a Punnett Square:

EH Eh eH eh

EH EEHH EEHh EeHH EeHh

Eh EEHh EEhh EeHh Eehh

eH EeHH EeHh eeHH eeHh

eh EeHh Eehh eeHh eehh

These are all the possibilities for the parents' offspring. Since the square is 4x4, then the number of genotypes is 16.

Now for the probabilities of each genotype (the amount of times a certain genotype appears divided by the total number of genotypes):

EEHH: $\frac{1}{16}$

EEHh: $\frac{2}{16}$

EEhh: $\frac{1}{16}$

EeHH: $\frac{2}{16}$

EeHh: $\frac{4}{16}$

Eehh: $\frac{2}{16}$

eeHH: $\frac{1}{16}$

eeHh: $\frac{2}{16}$

eehh: $\frac{1}{16}$

(If you ever want to check if your probabilities are off, just add them together and they should add up to the total!)

Hope this helps! :)

6 0

3 years ago

How do feedbacks make climate change worse?

Bezzdna [24]

Forcings and feedbacks together determine how much and how fast the climate changes. The main positive feedback in global warming is the tendency of warming to increase the amount of water vapor in the atmosphere, which in turn leads to further warming

8 0

3 years ago

Read 2 more answers