Embibe Big Book for Life Sciences for High School

Life Sciences

Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.

This Chapter from Embibe Big Book for Life Sciences for High School has 1 topics to practice on Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.

Inheritance of Traits - Each chromosome consists of a single very long DNA molecule, and each gene on the chromosome is a particular segment of that DNA. The instructions for forming species’ characteristics are carried in DNA. All cells in an organism have the same genetic content, but the genes used (expressed) by the cell may be regulated in different ways. Not all DNA codes for a protein; some segments of DNA are involved in regulatory or structural functions, and some have no as-yet known function.

Sex Determination in Drosophila melanogaster

Incomplete Linkage in Drosophila

Complete Linkage in Drosophila

Gene Mutation, Types and Effects

Sex Determination and Its Types

Factors Causing Variation

Sex Determination in Humans

Down's Syndrome

This chapter consists of topics like Variation of Traits - In sexual reproduction, chromosomes can sometimesswap sections during the process of meiosis (celldivision), thereby creating new genetic combinationsand thus more genetic variation. Although DNAreplication is tightly regulated and remarkably accurate,errors do occur and result in mutations, which are alsoa source of genetic variation. Environmental factors canalso cause mutations in genes, and viable mutationsare inherited.Environmental factors also affect expression of traits, and hence affect the probability of occurrences of traits in a population. Thus the variation and distribution of traits observed depends on both genetic and environmental factors. etc.

Make and defend a claim based on evidence that inheritable genetic variations may result from: (1) new genetic combinations through meiosis, (2) viable errors occurring during replication, and/or (3) mutations caused by environmental factors.

This chapter consists of topics like Variation of Traits - Environmental factors also affect expression of traits, and hence affect the probability of occurrences of traits in a population. Thus the variation and distribution of traits observed depends on both genetic and environmental factors. etc.

Apply concepts of statistics and probability to explain the variation and distribution of expressed traits in a population.

Plant DNA Isolation: SDS Method

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