Tell some thing about Ch 9 of class 8th

Biology

1 answer:

garik1379 [7]3 years ago

5 0

answer

in this chapter you'll learn about how reproduction take place in organisms like animals and humans . you'll also get to know very different way of some uni cellular and multi cellular organisms that how they divide itself and produce a new kind of it's own ; example : the process of budding , binary fission . you'll get to know how internal and external fertilization .

hope you have understand :)

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Marat540 [252]

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Explanation:

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3 years ago

Which of the following is an example of polygenic (quantitative) inheritance? a. the ABO blood groups b. Huntington's disease

ra1l [238]

Answer:Human height

Explanation:

Inheritance patterns are often more complex than predicted by simple mendalian genetics. When Mendel studied some phenotypic characters, like the human skin color and height, they were found to be an addictive effect of two or more genes on a single phenotypic character. These are called quantitative characters, which usually indicates polygenic inheritance.

The human height is an example of quantitative character, it is controlled by at least 3 genes having 6 alleles. 3 genes with 6 alleles from both parent can give rise to wide range of phenotypic character (heights).