What are genes responsible for?

Traits like height, eye color, and blood group.

How do alleles affect physical appearance?

By expressing traits physically based on variations.

Homozygous have two same alleles, heterozygous have different.

By carrying DNA that codes for bodily proteins.

Genotype influences phenotype, determining physical appearance.

Genes are sections of DNA that determine specific traits, with alleles representing variations of these genes that are inherited from parents and expressed physically in offspring.
Alleles come in pairs on homologous chromosomes, with dominant alleles masking recessive ones in determining an organism's physical appearance, influenced by its genotype and phenotype.

What are genes responsible for?
Traits like height, eye color, and blood group.
How do alleles affect physical appearance?
By expressing traits physically based on variations.
What is the difference between homozygous and heterozygous individuals?
Homozygous have two same alleles, heterozygous have different.
How do chromosomes contribute to genetic inheritance?
By carrying DNA that codes for bodily proteins.
What is the relationship between genotype and phenotype?
Genotype influences phenotype, determining physical appearance.

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Miss Angler introduces genetics in her biology class for grades 8 to 12, emphasizing the basics and directing viewers to more detailed grade 12 videos for in-depth coverage.
Chromatin networks in cells condense into chromosomes during mitotic or meiotic division, with chromosomes containing DNA that codes for various bodily proteins.
Genes are sections of DNA responsible for specific traits like height, eye color, and blood group, with variations called alleles expressing these traits physically.
Alleles come in pairs on homologous chromosomes, with one allele inherited from each parent, determining physical characteristics in offspring.
In meiosis, maternal and paternal chromosomes separate, ensuring only one allele for each trait is passed on to offspring, avoiding chromosomal mutations.
Alleles are denoted by letters, with dominant alleles represented by capital letters and recessive alleles by lowercase letters.
The combination of alleles determines physical appearance, with dominant alleles masking recessive ones in heterozygous individuals.
Phenotype, the physical appearance of an organism, is influenced by its genotype, the combination of alleles it possesses.
Homozygous individuals have two of the same alleles (either dominant or recessive), while heterozygous individuals have one of each.
Miss Angler concludes with a terminology recap, covering chromatin networks, chromosomes, genes, alleles, dominant and recessive traits, and homozygous and heterozygous combinations.