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Liula [17]
3 years ago
10

Some countries in Africa have a negative human population growth. This is most likely due to _____.

Biology
2 answers:
Vikki [24]3 years ago
5 0
Reductions in the infant mortality
Ray Of Light [21]3 years ago
4 0

Answer:

The correct answer is high mortality rates due to AIDS.

Explanation:

The mortality rate is illustrated as the determination of entire deaths in a population of a specific area, with respect to the size of that population, in a given time unit. It has a negative influence on the growth of human population.  

In various parts of Africa, AIDS is a lethal health condition, as it exhibits lowered life expectancy of individuals and leads to many deaths.  

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Consider 2 genes in peas- gene controlling seed color- yellow Vs green; gene controlling seed texture-smooth Vs wrinkled. Assume
Luden [163]

Answer:

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

Explanation:

Gene controlling seed color are yellow Vs green

Gene controlling seed texture are smooth Vs wrinkled

In F1 generation, A true breeding smooth green plant (SSyy) is crossed to a true breeding wrinkled yellow (ssYY)

Off spring in F1 generation are smooth yellow (SsYy)

This means smooth texture is dominant over wrinkled texture and yellow color is dominant over green  

in F2 generation, the cross is carried between SsYy

SY         Sy        sY          sy

SY SSYY SSYy SsYY SsYy

Sy SSYy SSyy SsYy Ssyy

sY SsYY SsYy ssYY ssYy

sy SsYy Ssyy ssYy ssyy

Smooth & yellow: 9

smooth & green: 3

wrinkled & yellow: 3

wrinkled & green: 1

4 0
3 years ago
What two chemicals result when rhodopsin decomposes ?
koban [17]

Well, two chemicals that result from rhodopsin decomposing would be Retinal and Opsin.

hope it helped :))

4 0
3 years ago
A competent bacterial strain with genes a, b, and c is transformed by a donor bacterial fragment. Cotransformation frequencies f
mina [271]

Answer:

a) Genes b and c are farthest apart.

Explanation:

Transformation occurs when a competent bacteria cell takes up genetic material from the environment. Usually a donor cell donates its gene fragment  which is then incorporated into the chromosome or plasmid of recipient bacterial cell.

Cotransformation occurs when two genes are taken up together by the recipient. The closer the genes lie to each other, more are the chances of them being taken up together. Contransformation frequency will be higher if two genes are close to each other. Here, cotransformation frequencies between three genes are given. Amongst them, the lowest frequency is 0.0064% which is present between gene b and c. Hence, gene b and c are the farthest apart.

4 0
3 years ago
_________ can be found in the nucleus of an animal cell.
Vinvika [58]
All of the above.  Good luck with the bio
4 0
3 years ago
Why do cells need to go through transcription
AlladinOne [14]
The cell needs transcription because the DNA cannot leave the nucleus and therefore cannot transmit info to the other cells.
4 0
3 years ago
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