Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Which of the following represents an organism that is homozygous dominant for a trait?
rr
Rr
RR
rR
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- ABO blood group is co-dominant for AB and O is recessive. Rh (+/-) factor is completely dominant. A man with O/positive blood and a woman with A/negative blood have six children. All of their children have A + blood type. What can you conclude about the parents’ genotypes? Group of answer choices Both mother and father are likely homozygous at both loci Mother was homozygous at the ABO locus but heterozygous at the Rh factor locus Father was homozygous at the ABO locus but heterozygous at the Rh factor locus Mother was heterozygous at both lociarrow_forwardA gene has two alleles, E and e. Another gene also has two alleles, T and t. Which of the following correctly shows linkage between the two genes? Group of answer choices ET/et Te/Et Ete/T Ee/tTarrow_forwardBrown eyes are dominant over blue eyes. This is NOT a sex linked trait. Cross a brown eyed Color blind male (whose mother had blue eyes) with a normal blue eyed female (whose father was colorblind)arrow_forward
- A reciprocal cross is useful when determining which of the following? If a trait is sex-limited The unknown genotype of one parent Whether a trait is controlled by one or two genes Whether a trait is X-linked None of these is correctarrow_forwardTo play Jeopardy, the answer is given. You must supply the question. Choose the best question for the following answer: Mutant allele causing malfunction of the wild-type allele, giving rise to a dominant phenotype. What is codominance? What is incomplete dominance? O What is dominant negative? O What is haploinsufficiency?arrow_forwardStep by step explain whyarrow_forward
- Classify each statement as true or false. The progeny of a mating between two pure-breeding plants, one with the dominant characteristic caused by S, and the other with the recessive characteristic caused by s, will yield progeny with a mix of dominant and recessive characteristics. An individual that is Ss is pure-breeding for the S gene. A mating between SS and Ss individuals will result in all pure-breeding progeny. An individual that is SS is pure-breeding for the S gene.arrow_forwardA scientist is investigating the inheritance of two autosomal recessive genes in rat, ear length (long is dominant to short) and fur color (gray is dominant to white). The table below provides the number of observed off-spring for each phenotype, when heterozygous rats are crossed. What are the expected values for each phenotype? Phenotype Observed Expected Long, gray 189 Long, white 56 Short, gray 74 Short, white 23 Total 342arrow_forwardWhat would be the phenotypic and genotypic ratio in F2 generation of the offspring of two parents? One parent is homozygously dominant for height and the other parent is recessive or height.arrow_forward
- Auricular hypertrichosis is a dominant Y-linked condition. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b C STRONGLY AGREE! STRONGLY DISAGREE! There is no such thing as a dominant or recessive Y-linked trait since only one allele is involved making this the most appropriate choice. Not enough information is provided to interpret the statement. Operarrow_forwardPlease help to fill in the table based on the chart located to the right.arrow_forwardWhich of the following is NOT true of Mendelian traits (Select] [Select ] they are governed by more than one genetic locus Previous they are the product of a single gene they have 2 phenotypes No they have 3 genotypes they are discrete traitsarrow_forward
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