{ "@context": "https://schema.org", "@type": "Organization", "name": "Brainscape", "url": "https://www.brainscape.com/", "logo": "https://www.brainscape.com/pks/images/cms/public-views/shared/Brainscape-logo-c4e172b280b4616f7fda.svg", "sameAs": [ "https://www.facebook.com/Brainscape", "https://x.com/brainscape", "https://www.linkedin.com/company/brainscape", "https://www.instagram.com/brainscape/", "https://www.tiktok.com/@brainscapeu", "https://www.pinterest.com/brainscape/", "https://www.youtube.com/@BrainscapeNY" ], "contactPoint": { "@type": "ContactPoint", "telephone": "(929) 334-4005", "contactType": "customer service", "availableLanguage": ["English"] }, "founder": { "@type": "Person", "name": "Andrew Cohen" }, "description": "Brainscape’s spaced repetition system is proven to DOUBLE learning results! Find, make, and study flashcards online or in our mobile app. Serious learners only.", "address": { "@type": "PostalAddress", "streetAddress": "159 W 25th St, Ste 517", "addressLocality": "New York", "addressRegion": "NY", "postalCode": "10001", "addressCountry": "USA" } }

Genetics 3 Flashcards

(3 cards)

1
Q

How do we label genes and their alleles for for sex-linked traits?

A

Recall:
Male = XY
Female = XX

Sex-linked genes:

FEMALES: MALES:

X^A X^A X^A Y (homozygous Dominant)
X^A X^a X^a Y ( homozygous Recessive)
X^a X^a N/A. (Heterozygous)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

X-linked rescessive: (sex-linked)

A
  • Males often have the disease
  • females are carriers (Carries the bad gene but does not express it). Because:
    a) their father has the gene and the mother is not a carrier.
    b) their mother is a carrier and father is unaffected
  • every affected son Has a carrier mother and healthy father
  • trait often skips a generation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

X-linked dominant:

A
  • both males and females re equally affected
  • if father is affected, all daughters are affected but no sons
  • if mother is affected about half her children will be affected (both son and daughter)
  • the trait does not skip a generation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly