27.7 Heredity Flashcards
If two alleles code for the same trait (such as blond hair), they are said to be:
homozygous.
autologous.
heterozygous.
homologous.
If two alleles code for the same trait (such as blond hair), they are said to be:
homozygous.
autologous.
heterozygous.
homologous.
Predict the possible blood types, or phenotypes, of offspring in which the father has blood type O and the mother has blood type AB.
The possible blood types of the offspring are phenotypes A or B only.
The possible blood types of the offspring are phenotypes AB or O only.
The possible blood types of the offspring are phenotypes A or O only.
The possible blood types of the offspring are phenotypes A, B, AB, or O.
Predict the possible blood types, or phenotypes, of offspring in which the father has blood type O and the mother has blood type AB.
The possible blood types of the offspring are phenotypes A or B only.
The possible blood types of the offspring are phenotypes AB or O only.
The possible blood types of the offspring are phenotypes A or O only.
The possible blood types of the offspring are phenotypes A, B, AB, or O.
The transmission of genetic characteristics from parent to offspring through the genes is called _______; ____is the science that studies heredity.
The transmission of genetic characteristics from parent to offspring through the genes is called heredity; genetics is the science that studies heredity.
______________ refers to the interaction of alleles that are strictly dominant or recessive, which means that a dominant trait masks a recessive trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
______________ refers to the interaction of alleles that are strictly dominant or recessive, which means that a dominant trait masks a recessive trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Many traits involve___________________, or the interaction of multiple alleles.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Many traits involve incomplete dominance, or the interaction of multiple alleles.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
____________________ occurs when the combined effects of two or more genes produce a trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Polygenic inheritance occurs when the combined effects of two or more genes produce a trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
___________________________ involves the influence of environmental factors in addition to the combined effects of two or more genes to produce a trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Multifactorial inheritance involves the influence of environmental factors in addition to the combined effects of two or more genes to produce a trait.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
______________ are those that are specifically expressed on the X or Y chromosome, called the sex chromosomes.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Sex-linked traits are those that are specifically expressed on the X or Y chromosome, called the sex chromosomes.
Autosomal dominant-recessive inheritance
incomplete dominance
Polygenic inheritance
Multifactorial inheritance
Sex-linked traits
Which of the following is an inherited trait influenced by multiple alleles?
color blindness
sickle cell anemia
ABO blood types
skin color
Which of the following is an inherited trait influenced by multiple alleles?
color blindness
sickle cell anemia
ABO blood types - multiple alleles
skin color - polygenic
Rvw: multipple alleles vs polygenic
–Examples of traits with ________ inheritance include height, skin color, and eye color
polygenic
Multiple-allele traits—many human traits involve interaction of multiple alleles
–ABO blood types exhibit phenomenon of codominance; some alleles are equally dominant and are, therefore, equally expressed; IA and IB are codominant alleles, while i is recessive
–Example of ___________________in humans involves sickling gene that causes sickle-cell anemia
–Example of incomplete dominance in humans involves sickling gene that causes sickle-cell anemia
Genes are segments of DNA that code for ______________, and alleles are variants of genes. The genetic makeup of an individual is referred to as the genotype, and the physical expression of an individual’s genotype is the phenotype.
Genes are segments of DNA that code for a specific protein, and alleles are variants of genes. The genetic makeup of an individual is referred to as the genotype, and the physical expression of an individual’s genotype is the phenotype.
