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kozerog [31]
2 years ago
12

According to the model below, how long ago did the common ancestor of all the organisms on the

Biology
1 answer:
lapo4ka [179]2 years ago
6 0

<em><u>Answer</u></em>

<em><u>about 3.9 billion years ago</u></em>

<em><u>about 3.9 billion years agoThe most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago.</u></em>

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Which Punnet square represents a cross between two parents that are heterozygous for purple flowers
navik [9.2K]

Answer:

Punnett square is a square diagram which is used to predict the genotype of the offspring produced by particular cross.

Let P and p be the alleles of the gene responsible for the flower colors in a plant.

The genotype of both the parents is given as heterozygous that is, Pp.

Two types of gametes would be formed P and p.

The cross is shown in the image below.

The cross would be result in offspring with three types of genotypes PP, Pp and pp in 1:2:1.


8 0
3 years ago
Read 2 more answers
Members of the phylum Actinobacteria have had a profound impact on human health over the course of civilization. One member of t
Drupady [299]

Answer:

The correct answer would be - mycobacterium, and streptomyces.

Explanation:

Actinobacteria is a phylum that consists of a group of gram-positive bacteria with cytosine and guanine content in their DNA. These bacteria can be aquatic or land bacteria. Actinobacteria do not have cell wall however they make a non-sptate and mycelium.

Mycobacterium is one of the genera of the actinobacterium phylum. This genus includes pathogenic species in it that cause deadly diseases in humans and other mammals such as leprosy and tuberculosis Whereas streptomyces is another genus of the actinobacteria that is yielded the very first drug to fight with the ancient scourge.

Thus, the correct answer is - mycobacterium and streptomyces.

8 0
3 years ago
Two birds that look very similar to each other have always been considered two distinct species based on differences in their bo
exis [7]
The evaluation of their DNA and short tandem repeats will let them know if the birds are related or not. The genetic linkage will provide information about their common ancestry as well as if they belong to the same species, or are closely related species. 
7 0
3 years ago
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Where in the abdomen is the stomach located? MULTIPLE CHOICE.
Over [174]

Answer:

Your stomach is located on the left side of the upper left of the abdomen! Hope this helps ^_^

4 0
3 years ago
Criminal profiling has some differences to
Tanya [424]

Answer:

Knowledge gain through observation and experimentation.

Explanation:

Science is the systematic study of the structure and behaviour of the physical and natural world through observation and experiment. That knowledge which can be gain through observation and experimentations is considered as scientific knowledge and those knowledge which can be attain through other sources not observation and experiments is known as non-scientific knowledge so we can say that observation and experiments provide scientific knowledge.

8 0
2 years ago
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