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Ilya [14]
1 year ago
7

Why is it difficult for scientists to study

Biology
1 answer:
sasho [114]1 year ago
6 0

Answer:

c

Explanation:

due to low light illumination there would very low level of oxygen at the bottom of the sea therefore hindering the survival of these organisms

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Match the planet with its best description.
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Read 2 more answers
If someone with auburn hair has children with someone with red hair (but whose mother had black hair ) what are the genotype and
tensa zangetsu [6.8K]

The phenotype is - 75 % red and 25 %brown.

The genotype is hRhR - 25%

hBkhR - 50%

hBrhBk - 25%.

<h3><u>Explanation:</u></h3>

The cross given here is a simple dominant - recessive relationship between the three types of alleles of hair colour. The genes of this characteristics are present in autosomes, so will be segregated equally among all the sexes of the offsprings.

Now the genotype of auburn and red with black mother is given. So during gametogenesis, the gametes from the parents will be

Father - hBr and hR

Mother - hBk and hR

So, the probable combinations are hBrhBk, hBrhR and hBkhR.

The frequency of the combinations are 25%, 25% and 50% respectively.

The phenotypic ratio will be red : brown as 3:1.

6 0
3 years ago
how could Julio explain why all three species share some body structures and have some differences? why do only grizzly bears an
shusha [124]

Answer:

Some species are similar in structure because they are evolved from the same ancestors while some differences are also present in them due to the changes occurs in the body because of adaptation to environmental conditions.

Grizzly bears and sea otters have canine teeth because canine teeth are used to crushing hard food materials such as fishes and shells.

Explanation:

Canine teeth are present in the grizzly bear and sea otters due to eating of food materials which are hard. Canine teeth used to crush the food materials.

6 0
3 years ago
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