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exis [7]
2 years ago
13

List three examples of stimuli that a bird responds to

Biology
2 answers:
wariber [46]2 years ago
7 0
Number of mates, quantity of territory, quality of food
RoseWind [281]2 years ago
3 0
Weather conditions, temperature, and Food availability 
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Gel analysis of fragments in step 6 shows that even though the undigested DNA and DNA digested with HindIII are both 1000 bp, th
Soloha48 [4]

Answer:

Size of the band varied

Explanation:

In the given question, the options are not provided but based on the information provided in the question, it can be predicted.

When the DNA was digested by the HindIII, then the length of the digest came about 1000 bp and the undigested DNA was also found 1000 bp.

When both the bands were analysed by Gel electrophoresis then the bands do not run to the same distance therefore this shows that the size of both the bands was not equal and their size varied.

Thus, the size of the band varied is correct.

6 0
2 years ago
Which statement correctly describes a property of enzymes? A Enzymes react at identical rates under all circumstances. B Enzymes
andre [41]

Answer:

It's either A or D

Explanation:

7 0
2 years ago
Read 2 more answers
Chromosomes contain __________. chromosomes contain __________. one type of macromolecule: nucleic acid no macromolecules, just
Nitella [24]
<span>Two types of macromolecules: nucleic acid and protein. Chromosomes are how the DNA is stored so they primarily contain nucleic acids. In addition to properly organize and condense the DNA, proteins are required. These include histones and other proteins.</span>
6 0
2 years ago
21. A type of cell that can exist in a broad range of environmental conditions, can rapidly multiply, and lacks a nucleus is kno
Lerok [7]

Answer:

a

Explanation:

7 0
2 years ago
A tobacco plant is heterozygous for the genes for long stems (Ss), large leaves (Ll), and fibrous roots (Rr). It is crossed with
Ainat [17]
Firstly, start by doing Punnett squares for each of the characteristics. Attached are the three Punnet squares, made by me, as they should look in end.

For each of the Punnet squares, one characteristic each, we find that half of the offspring will be heterozygous for that characteristic.
Therefore, according to the product rule, you should now multiply the quantity of heterozygous for each characteristic and then obtain the total part of the offspring that's fully heterozygous.

\frac{1}{2}Ss×\frac{1}{2}Ll×\frac{1}{2}Rr=\frac{1}{8}SsLlRr

Total offspring×\frac{1}{8}=10
There is 10 plants in the total offspring that are heterozygous for all the considered three genes.

7 0
2 years ago
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