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WINSTONCH [101]
3 years ago
14

How does winter defer in the north and south hemisphere

Biology
2 answers:
Allisa [31]3 years ago
5 0

AnswWinter in the northern hemisphere is cold and snowy, while winter in the southern hemisphere is hot.

Explanation:

Veseljchak [2.6K]3 years ago
3 0

Answer:

when its is winter in North America it is summer in South America and vise versa

Explanation:

the Northern hemisphere is facing up and Southern Hemisphere is facing the sun and vise versa

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Achondroplastic dwarfism is a dominant genetic trait that causes severe malformation of the skeleton. Homozygotes for this condi
AleksandrR [38]

Answer:

Jane: Aa

Matthew: aa

Explanation:

Jane is a heterozygous woman, which means that she is dominant for this genetic trait while Matthew is homozygous that did not inherit the achondroplastic dwarfism trait from his parents, that is why he is alive.

If we draw a Punnett square, we can see that some of their children will inherit the trait while others will not.

<u>   ║ a      ║ a</u>

<u>A  ║   Aa ║Aa</u>

a  ║ aa    ║ aa

5 0
3 years ago
What are the three main ways that common ancestry may be shown through homologies
Harrizon [31]

Answer:

Homology is a study of similar characters found in two species because of common ancestry.

Explanation:

1.Morphological homology: Species placed under same taxonomic category exhibit similar anatomical structures.

2.Ontogenetic homology: Species belongs to same taxonomic category embryological similarities

3.Molecular homology: Species show molecular similarities such as DNA,RNA and protein

An example of homology is seen in the skeletal strycture of vertebrates. That is arm of a human,leg of a cat,fin of a whale and wing of a bat.

Download docx
6 0
3 years ago
1. Key Concept List the
Ipatiy [6.2K]
<h2>DNA </h2>

Explanation:    

1) Experiment done by Griffith:

  • Griffith used two related strains of bacteria, known as R and S
  • R bacteria were nonvirulent, meaning that they did not cause sickness when injected into a mouse whereas mice injected with live S bacteria developed pneumonia and died
  • Griffith tried injecting mice with heat-killed S bacteria (that is, S bacteria that had been heated to high temperatures, causing the cells to die), the heat-killed S bacteria did not cause disease in mice
  • When harmless R bacteria were combined with harmless heat-killed S bacteria and injected into a mouse, not only did the mouse developed disease and died, but when Griffith took a blood sample from the dead mouse, he found that it contained living S bacteria
  • Griffith concluded that the R-strain bacteria must have taken up what he called a transforming principle from the heat-killed S bacteria, which allowed them to transform into smooth-coated bacteria and become virulent

2) Experiment done by Avery:

  • Avery, McCarty and MacLeod set out to identify Griffith's transforming principle
  • They began with large cultures of heat-killed S cells and, through a long series of biochemical steps progressively purified the transforming principle by washing away, separating out, or enzymatically destroying the other cellular components
  • These results all pointed to DNA as the likely transforming principle but Avery was cautious in interpreting his results
  • He realized that it was still possible that some contaminating substance present in small amounts, not DNA, was the actual transforming principle

3) Experiment done by Hershey and Chase:

  • Hershey and Chase studied bacteriophage, or viruses that attack bacteria
  • The phages they used were simple particles composed of protein and DNA, with the outer structures made of protein and the inner core consisting of DNA
  • Hershey and Chase concluded that DNA, not protein, was injected into host cells and made up the genetic material of the phage

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3 years ago
What traits are more likely to be found in males ?
leva [86]

what are the answer choices

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3 years ago
Which of the following mutations is evolutionarily important?
kompoz [17]
A gene in an egg cell inserts two extra base pairs!!
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3 years ago
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