Question

True or False:

Sex chromosomes in mammals Indicate whether each of the following statements about sex chromosomes in mammals is true or false. 01. Dosage compensation involves inactivation of the Y chromosome in males in order to equalize gene expression between the sexes.(Click to select) 02. One of the X chromosomes in each cell of a female is inactivated early in embryonic development, before the embryo's sex is determined. (Click to select) 03. In a female, the same X chromosome is inactivated in all cells.(Click to select) 04. If a female is heterozygous for an X-linked trait, some of her cells will express one allele and some the other, resulting in a genetic mosaic. (Click to select) 05. In males, the inactivated and highly condensed Y chromosome is visible as an intensely staining Barr body attached to the nuclear membrane. (Click to select) 06. Calico cats are heterozygous for alleles on the X chromosome that produce either black fur or orange fur. (Click to select) 07. In calico cats, whether the fur in a particular area is black or orange depends on which of the two X chromosomes is inactivated. (Click to select) 08. Almost all calico cats are female. (Click to select)

Answer 1

Oosage compensation involves inactivation ot he chromasome in males in onde to equalize the expsession bluseres (false) tor Dosage compendation inauthvation A-Chromosome in female OLcu im the one x chromosomes im the each ucell o a female imactivated eauly in embryonic developrment before the embryo's dex is determined Eblainatien True Foetus shows externa!dexual ogan ater seven eak

false gt is Handom poocess, mateinally darisel or the chiomosSome Can be adenaly deed any Imactivated One false false gnactivated x chomosome in temale appous a bar