Word problems
Dale has a recessive trait of blue eyes, rr. Barb has a dominate trait of brown eyes, RR. What are the chances of blue eyes?
0%
________ is the passing down of traits from one generation to the next?
Hereditary
some genes can be hidden or covered up by another. these are considered to be-
recessive
how are traits passed from parent to offspring
genes during reproduction
Mike has heterozygous for brown eyes. Margie has blue eyes homozygous recessive. What are the percentage for both eye colors?
50% brown and 50% blue
Alleles that are the same are called _______?
Homozygous
what are the punnett Squares used for
to determine the outcome of genetic crossings
name two traits that could be inherited from a parent
hair color, eye color, height, skin color, freckles
Mike is heterozygous for brown eyes. His wife has blue eyes. What percentage of their children will most likely have brown eyes and blue eyes?
What is 50% brown and 50% blue eyes?
Alleles that are different are called ________?
Heterozygous
a orange chicken BB is crossed with a red chicken BB what percentage of offspring will be black
100%
why does a punnett square use capital and lowercase letters
capitial = dominant trait lower case= recessive trait
Tim and Jenny both have dark hair, but each of them carry a recessive trait for light hair. What are the chances that their children will have dark hair? Light hair?
75% dark hair 25% light hair
_________ describes alleles and is represented by letters like Tt or TT
Genotype
having dimples is dominant D. not having dimples is recessive. d both parents are heterozygous for the dominant trait. what percentage of the children will not have dimples
25%
how many parents are involved in asexual reproduction
one
James is homozygous for big lips. His wife also has big lips, but one of their children has small lips. What is his wife's genotype?
Bb/Heterozygous
_________ is an expression of the genotype, how it many be expressed. (tall, hair color, lips, ect.)
Phenotype
long ears are dominant E in rabbits. if one parent is homozygous donimant for the long ear trait and the other homozygours recessive e what is the only possible genotype of the offspring
Ee
two dark brown rabbits have four offspring three of the offspring are dark and one is white. what does this tell you about the parents genes for fur color
dark brown is dominant and white fur is recessive
both are heterozygous