Answer:
Sex determination may be defined as the phenomena of determining the sex whether the organism is male, female or hermaphrodite. Different methods of sex determination are present in different organism.
In case of humans, the sex chromosome of an individual with XY is male whereas XX is female. Humans male are heterogametic. In case of birds the chromosome with ZZ are males (homogametic) whereas ZW is female. In case of Drosophila XY and XO flies are males , while XX, XXY, and XXYY flies are females.
Answer:
Dogs were probably domesticated by accident, when wolves began trailing ancient hunter-gatherers to snack on their garbage. Docile wolves may have been slipped extra food scraps, the theory goes, so they survived better, and passed on their genes. Eventually, these friendly wolves evolved into dogs
Explanation:
Given what we know about darwins theory of evolution, we can say that the similarities and differences between species help to prove how completely unrelated species can evolve similar traits based on necessity.
<h3>How do these similarities help to prove Darwin's theory?</h3>
- They provide evidence of entirely different species developing similar traits.
- These traits develop based on the <u>needs </u>of each organism and its <u>environment</u>.
- The difference in the species also helps to prove that the development of traits is not entirely genetic in origin, further supporting the theory of evolution.
Therefore, we can confirm that since the similarities of completely unrelated species can serve to show that organisms evolve to adapt to similar environments, we can use these as evidence to support Darwin's theory of evolution.
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If i remember correctly they should be adenine (A), thymine (T), guanine (G) and cytosine (C). i hope this helps. sorry if they arent all correct.