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Sauron [17]
2 years ago
12

1. What is a density-dependent limiting factor?

Biology
1 answer:
skelet666 [1.2K]2 years ago
6 0

the density-dependent limiting factor is a limiting factor that depends on population size even if its large populations are more affected than small, less crowded ones eg. predation, competition, food supply.

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Since water has strong surface tension, what do you think would happen if water had weak surface tension?
VashaNatasha [74]

I believe the answer is D if I am right please mark brainiest


3 0
3 years ago
Brown spotting of the teeth in humans is caused by a dominant X-linked gene. If a man with normal teeth marries a woman with bro
nata0808 [166]

Answer:

25%

Explanation:

The female with brown teeth had a father with normal teeth. Since normal teeth is a recessive trait, the father would have been homozygous recessive for the trait and would have transmitted one recessive allele to the female. Therefore, the female is heterozygous dominant for brown teeth.

Let's assume that the allele for brown teeth is X^B while the one for normal teeth is X^b. The genotype of heterozygous dominant female would be X^BX^b and that of the male with normal teeth would be X^bY.

A cross between X^BX^b and X^bY gives progeny in following phenotype ratio= 1/4 daughter with brown teeth: 1/4 daughter with normal teeth: 1/4 son with brown teeth: 1/4 son with normal teeth. Therefore, the probability of having a daughter with brown teeth is = 25%

7 0
3 years ago
Both liver cells and lens cells have the genes for making the proteins albumin and crystalline. However, only liver cells expres
k0ka [10]

The correct statement is liver cells possess transcriptional activators that are different from those of lens cells.

<h3>What are Transcriptional activators?</h3>

Transcriptional activators are specific protein sequences capable of activating gene expression.

These transcription factors (transcriptional activators) act to regulate gene expression in target cells.

Transcriptional activators are factors that enable the expression of certain genes in particular cell types.

Learn more about Transcriptional activators here:

brainly.com/question/12150990

6 0
2 years ago
In an analysis of the nucleotide composition of DNA, which of the following proportions will be found?
katrin [286]

Answer:

With respect to the composition of DNA, in an analysis it can be found that the proportions of nucleotides are A + C = G + T (option a).

Explanation:

The proportion of nucleotides in a DNA molecule can be established according to the sequence of these nucleotides on both complementary strands, since the purinic bases of one strand are complemented by the pyrimidinic bases of another:

  • <em>Adenine is complemented with Thymine A=T</em>
  • <em>Guanine is complemented with Cytosine G=C</em>

From this we can deduce that in a DNA molecule with two chains there will be the same amount of adenine and thymine, as well as the same number of guanine with respect to cytosine, so:

<em>     A + C = G + T</em>

An example of this would be a known DNA molecule (hypothetical), with 5 molecules of Adenine and 7 molecules of Guanine. In this case there are 5 Thymines, complementary with Adenine, and 7 Cytosines like Guanine:

<em>     A + C = G + T</em>

<em>     5 + 7 = 7 + 5</em>

6 0
2 years ago
Why does you need to breathe more during exercise respiratory system?
swat32
If you don’t, you’ll either pass out or die.
3 0
3 years ago
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