Ch. 29 Heredity

29장, 문제 1
Match each of the following key terms (a–i) with its description
below:
Key:
(a) alleles
(b) autosomes
(c) dominant allele
(d) genotype
(e) heterozygote
(f) homozygote
(g) phenotype
(h) recessive allele
(i) sex chromosomes
____ (1) genetic makeup
____ (2) how genetic makeup is expressed
____ (3) chromosomes that dictate most body characteristics
____ (4) alternate forms of the same gene
____ (5) an individual bearing two alleles that are the same for a particular trait
____ (6) an allele that is expressed whether in single or double dose
____ (7) an individual bearing two alleles that differ for a particular trait
____ (8) an allele that must be present in double dose to be expressed
검증된 단계별 안내1
Step 1: Understand the term 'genotype' as the genetic makeup of an organism. This refers to the specific alleles an individual carries for a particular gene. So, match 'genotype' with description (1).
Step 2: Recognize 'phenotype' as the observable expression or characteristics resulting from the genotype. This corresponds to how the genetic makeup is expressed, matching description (2).
Step 3: Identify 'autosomes' as chromosomes that carry most of the body's genetic information, excluding sex determination. These are the chromosomes that dictate most body characteristics, matching description (3).
Step 4: Define 'alleles' as alternate forms of the same gene found at the same locus on homologous chromosomes. This matches description (4).
Step 5: Differentiate between 'homozygote' and 'heterozygote': a homozygote has two identical alleles for a trait (matching description (5)), while a heterozygote has two different alleles for a trait (matching description (7)). Also, understand 'dominant allele' as one expressed in single or double dose (matching description (6)) and 'recessive allele' as one expressed only when present in double dose (matching description (8)).
주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Alleles
Alleles are different versions of the same gene found at a specific locus on a chromosome. They can vary in sequence and influence traits differently, such as dominant or recessive forms, determining how a trait is expressed in an organism.
추천 영상:
가이드 코스
Dominant vs. Recessive Alleles
Genotype and Phenotype
Genotype refers to the genetic makeup of an organism, specifically the combination of alleles it carries. Phenotype is the observable physical or biochemical characteristics resulting from the genotype and environmental influences.
추천 영상:
가이드 코스
Genotype & Phenotype
Dominant and Recessive Alleles
Dominant alleles are expressed in the phenotype even if only one copy is present, while recessive alleles require two copies to be expressed. This relationship explains how traits are inherited and why some traits may skip generations.
추천 영상:
가이드 코스
Dominant vs. Recessive Alleles
관련 실천
