Answer:
True
Explanation:
Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.
The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.
The answer is D the birds and the same bone structure but there beaks changed to eat different food so it can't be a or b and the song is just for mating and they are different species so the answer is D. (D)
Answer:
Explanation:
A modern scientific inquiry system uses the scientific method to understand and explain the natural phenomenon.
The scientific theory involves various steps which begin with making an observation , asking questions, doing background research and proposing a hypothesis. The hypothesis is tested through experiments which prove or disproves the hypothesis which when established form laws and theory.
The Mendel followed the same approach unaware of the scientific method and performed experiments to answer the scientific question of how traits are controlled and passed on in generations. He analysed the conclusions which were proved after his death by other scientists and framed the biological laws called Mendel's law of inheritance.
Thus, Mendel's inquiries followed the same steps of the scientific method.
Strict hand washing policies.