Which findings support the fact that the presence of the Y- chromosome rather than the lack of a second X-chromosome determines the development of maleness in mammals? ) A transgenic mouse with two X-chromosomes and the SRY gene from the Y-chromosome develops male sex organs. ) A human with an XXXY genotype (Klinefelter syndrome) is phenotypically male. A human with an XO genotype (Turner syndrome) is phenotypically female. a and b, but not c a, b, and c

Which findings support the fact that the presence of the Y- chromosome rather than the lack of a second X-chromosome determines the development of maleness in mammals? ) A transgenic mouse with two X-chromosomes and the SRY gene from the Y-chromosome develops male sex organs. ) A human with an XXXY genotype (Klinefelter syndrome) is phenotypically male. A human with an XO genotype (Turner syndrome) is phenotypically female. a and b, but not c a, b, and c

Name: Which findings support the fact that the presence of the Y-chromosome
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: Which findings support the fact that the presence of the Y-chromosome rather than the lack of a second X-chromosomedetermines the development of maleness in mammals?A transgenic mouse with two X-chromosomes and the SRY gene fromthe Y-chromosome deve

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...

See similar textbooks

Similar questions

Describe when X-chromosome inactivation occurs and how thisleads to phenotypic results at the organism level. In your answer,you should explain why XCI causes results such as variegated coatpatterns in mammals. Why do two different calico cats have theirpatches of orange and black fur in different places? Explainwhether or not a variegated coat pattern due to XCI could occur inmarsupials.
A black female cat (XBXB) and an orange male cat (X0Y) weremated to each other and produced a male cat that was calico.Which sex chromosomes did this male offspring inherit from itsmother and father? Remember that the presence of the Y chromosome determines maleness in mammals
Can the Lyon hypothesis be tested in a human female who is homozygousfor one allele of the X-linked G6PD gene? Why, or why not?
Butterflies have an X-Y sex-determination system that is different from that of flies or humans. Female butterflies may be either XY or X0, while butterflies with two or more X chromosomes are males. This photograph shows a tiger swallowtail gynandromorph, which is half male (left side) and half female (right side). Given that the first division of the zygote divides the embryo into the future right and left halves of the butterfly, propose a hypothesis that explains how nondisjunction during the first mitosis might have produced this unusual-looking butterfly. Question is also in the picture.
Maleness and Male Fertility Are the OnlyKnown Y-Linked Traits in Humans Explain?
Generally, sex chromosomes in male mammals are XY and females are XX. Followingmeiosis and gamete production, and assuming there are no chromosome mutations, what is thefrequency of the genotypes of all possible gametes, and what should be the sex ratio of alloffspring produced within a population?
In mice, dwarfism is caused by an X-linked recessive allele, and pink coat is caused by an autosomal dominantallele (coats are normally brownish). If a dwarf femalefrom a pure line is crossed with a pink male from a pureline, what will be the phenotypic ratios in the F1 and F2 ineach sex? (Invent and define your own gene symbols.)
Discuss the genetic determination of sex and the inheritance of X-linked genes in mammals.
Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. A female homozygous for an X-linked allele can produce how many types of gametes with respect to that allele? c. A female heterozygous for an X-linked allele can produce how many types of gametes with respect to that allele?
Human sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele? c. If a female is heterozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele?
Explain the process of X-Chromosome Inactivation in Mammalian Females.
Researchers discovered recently that the sole functionof the SRY protein is to activate an autosomal genecalled Sox9 in the presumptive gonad (before it has“decided” to become a testis or an ovary).a. What would be the sex of an XY individual homozygous for nonfunctional mutant alleles of Sox9?Explain.b. Given your answer to part (a), why is SRY, ratherthan Sox9, considered the male determining factor?(Hint: What do you think would happen if you didan experiment like the one in the Fast Forward BoxTransgenic Mice Prove That SRY Is the MalenessFactor, except that you used a Sox9 transgeneinstead of SRY?)