Question in English:
A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?
Answer:
2/3 females
1/3 males
Explanation:
Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).
The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.
The possible genotypes are:
<u> XL Xl</u>
<u>XL</u> <em>XLXL XLXl</em>
<u>Y</u> <em>XLY </em><em>XlY</em>
<em />
All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.
50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.
Because the allele is lethal, that means XlY males will not be born.
That means 2/3 of the children will be females, and 1/3 will be males.
A. You improve your health by setting as many goals as you can
Answer: <u>Human intellect</u>
Explanation:
Adaptability refers to one's ability to readily react to changes in one's environment. Humans easily adapt to changes and even modify or change our environment to solve obstacles or issues. This is integral to human intellect or intelligence -we are highly adaptive, capable of execution and organizing complex tasks.
Give me the choices and I’ll answer
Which characterizes<span> muscle </span>dysmorphia<span>? Distorted </span>body<span> image. Which is an </span>eating disorder characterized<span> by a </span>refusal<span> to </span>eat enough food<span> to </span>maintain<span> a </span>minimally normal body weight<span>? </span>Anorexia nervosa<span>. Which </span>characterizes bulimia nervosa<span>? Alternating </span>binge<span> eating and purging through vomiting, laxatives, or diuretics.</span>
