Genetic Inheritance
D
A Punnett square shows all of the following except... A- all possible results of a genetic cross, B-the genotypes of the offspring, C-the alleles in the gametes of each parent, D-the actual results of a genetic cross.
Long term impact is known, not ethical
A criticism of using biotechnology is...?
increasing food supply, nutritious food, crop growth, fights pests.
An advantage of producing genetically engineered plants has been...?
red or pink
Carnations show incomplete dominance. A hybrid pink carnation is crossed with a red carnation. What are the possible colors for their offspring
the allele for colorblindness is recessive and located on the X chromosome
Colorblindness is more common in males than in females because
black, white, or black and white
Erminette chickens display codominance with feather color. A black and white male had offspring with a black and white female. What are the possible feather colors of their offspring
OOxAB
If you cross two parents and they have offspring with only Type A and Type B blood, state the p-generation. Use your scrap paper to help you make different crossings to determine the correct answer.
remail skin cells and die
In a frog embryo, several skin cells are transplanted into the kidney. These skin cell will most likely...?
one X chromosome and one Y chromosome
In humans, a healthy male has...?
All are expected to be tall.
In the Punnett square shown, what will the result for these offspring be?
X chromosome
Most sex-linked genes are located on...
Stem cells
Multicellular organisms have the ability to undergo cell differentiation so that cells have specialized functions. What is the term given to cells that haven't differentiated yet?
homozygous
Organisms that have two identical alleles for a particular trait are said to be...?
Genes
Portions of DNA that code for proteins that determine traits are called...?
8 Red, long leaved; 8 Yellow, long leaved
Red flowers are dominant to yellow flowers, and Long leaves are dominant to short leaves. Cross a heterozygous red flower, heterozygous long leaved flower with a yellow flowered, homozygous long leaved flower. What phenotypes would be expressed from this crossing? You can complete your work on scrap paper.
biotechnology that increased the ability of the tomato plant to live and reproduce
Scientists inserted a new gene into a tomato plant that allowed the plant to produce an insect-killing protein. This gene impacted the somatic body cells only and didn't influence the plants gametes. What best describes this new discovery?
X^D X^d
The pedigree above tracks Duchenne Muscular Dystrophy which is an X-linked recessive trait. What is the genotype of individual II-2?
100%
The pedigree shown tracks Duchenne Muscular Dystrophy which is an X-linked recessive trait. If individuals I-1 and I-2 had another son, what is the chance that he would have DMD?
Individual 14 must be ff, homozygous recessive, his parents only have recessive alleles to give to offspring
The pedigree shows the inheritance of free earlobes and attached earlobes in five different generations of a family. Attached earlobes are caused by a recessive allele (f). Can you be certain of the genotype of individual 14? Explain your answer.
heterozygous
The pedigree shows the inheritance of free earlobes and attached earlobes in five different generations of a family. Attached earlobes are caused by a recessive allele (f). Is individual 2 homozygous or heterozygous for free earlobes?
0FF: 2Ff: 2ff
The pedigree shows the inheritance of free earlobes and attached earlobes in five different generations of a family. Attached earlobes are caused by a recessive allele (f). On your scrap paper, cross individual 1 & 2. Identify the correct genotypic ratio.
Rr
This pedigree displays an autosomal recessive trait. What is the genotype of individual I-1? Use the letter R/r to answer (RR, Rr, rr)
rr
This pedigree displays an autosomal recessive trait. What is the genotype of individual I-2? Use the letter R/r to answer (RR, Rr, rr)
Rr
This pedigree displays an autosomal recessive trait. What is the genotype of individual III-2?
Polygenic inheritance
Variation in human skin color is an example of...?
I-1=Rr III-5=rr
What are the genotypes for individual I-1 and and individual III-5 in the pedigree below?
to determine whether a traits inherited, show how a trait is passed from one gen to the next, determine whether and allele is dominant or recessive
What can a pedigree be used for?
female
What does a circle represent in a pedigree?
50%
What is the approximate probability that a human offspring will be female?
Autosomal dominant
What is the inheritance pattern being displayed in the pedigree below?
Sex-linked Recessive
What is the inheritance pattern most likely being displayed in the pedigree below?
The allele for the tall plants is dominant.
When Gregor Mendel crossed true-breading (purebred) tall plants with true-breading (purebred) short planes, all the offspring were tall because...?
An allele for tallness from the tall parent and an allele for shortness from the short parent.
When Gregor Mendel crosses a homozygous tall plant with a short plant, the F1 plants inherited...?
incomplete dominance
When one allele for a gene is not completely dominant over another allele for that gene.
A
Which of the following genotypes result in the same phenotype? A- X^A X^A and X^A X^a B- X^B X^B and X^b X^b C- X^B X^B and X^A X^B D- X^B Y and X^b Y
one allele for each gene
an individual gamete has...?
the expression of genes and environmental influences
development is influenced by...?
