Question

ch 14 hw - attempt 1
mendels law of segregation
use the character of peas that mendel studied was yellow versus green seeds. a cross between a heterozygous yellow line (yy) and a homozygous green line (yy) will result in f₁ plants that are heterozygous (yy) for this trait and produce yellow seeds.
f₁ gametes
?
?
when an f₁ plant undergoes meiosis, what gamete types will it produce, and in what proportions?
view available hint(s)
options:
1/4 y 3/4 y
1/2 y 1/2 y
1/2 yy 1/2 y
1/2 yy 1/2 yy
3/4 y 1/4 y
3 of 10
help

Explanation:

Step1: Recall Mendel's Law of Segregation

Mendel's Law of Segregation states that during meiosis, the two alleles of a gene segregate into different gametes. The \( F_1 \) plant here is heterozygous (\( Yy \)) for the seed color trait.

Step2: Determine Gamete Production

For a heterozygous individual (\( Yy \)), during meiosis, the two alleles \( Y \) and \( y \) will segregate. So the gametes produced will be \( Y \) and \( y \).

Step3: Determine Proportions

Since the segregation is random and equal (according to the law), the proportion of \( Y \) gametes and \( y \) gametes should be equal. So the proportion of \( Y \) gametes is \( \frac{1}{2} \) and the proportion of \( y \) gametes is \( \frac{1}{2} \). Looking at the options, the correct one is the one with \( \frac{1}{2} Y \) and \( \frac{1}{2} y \).

Answer:

\( \frac{1}{2} Y \), \( \frac{1}{2} y \) (the option with \( \frac{1}{2} Y \) and \( \frac{1}{2} y \))